dnl ===========================================================================
dnl Support for mysql server plugins
dnl ===========================================================================
dnl
dnl WorkLog#3201
dnl
dnl Framework for pluggable static and dynamic plugins for mysql
dnl
dnl ---------------------------------------------------------------------------
dnl Macro: MYSQL_PLUGIN
dnl
dnl SYNOPSIS
dnl   MYSQL_PLUGIN([name],[Plugin name],
dnl                [Plugin description],
dnl                [group,group...])
dnl   
dnl DESCRIPTION
dnl   First declaration for a plugin (mandatory).
dnl   Adds plugin as member to configuration groups (if specified)
dnl
dnl ---------------------------------------------------------------------------

AC_DEFUN([MYSQL_PLUGIN],[
 _MYSQL_PLUGIN(
  [$1],
  [__MYSQL_PLUGIN_]AS_TR_CPP([$1])[__],
  m4_default([$2], [$1 plugin]),
  m4_default([$3], [plugin for $1]),
  m4_default([[$4]], []),
 )
])

AC_DEFUN([_MYSQL_PLUGIN],[
 m4_ifdef([$2], [
  AC_FATAL([Duplicate MYSQL_PLUGIN declaration for $3])
 ],[
  m4_define([$2], [$1])
  _MYSQL_PLUGAPPEND([__mysql_plugin_list__],[$1])
  m4_define([MYSQL_PLUGIN_NAME_]AS_TR_CPP([$1]), [$3])
  m4_define([MYSQL_PLUGIN_DESC_]AS_TR_CPP([$1]), [$4])
  m4_ifdef([_AC_ENABLE_IF], [_AC_ENABLE_IF([with],[plugin-$1])])
  _MYSQL_PLUGAPPEND_META([$1], $5)
  ifelse(m4_bregexp(__mysql_include__,[/plug\.in$]),-1,[],[
     MYSQL_PLUGIN_DIRECTORY([$1],
         m4_bregexp(__mysql_include__,[^\(.*\)/plug\.in$],[\1]))
  ])
 ])
])


dnl ---------------------------------------------------------------------------
dnl Macro: MYSQL_STORAGE_ENGINE
dnl
dnl SYNOPSIS
dnl   MYSQL_STORAGE_ENGINE([name],[legacy-option],[Storage engine name],
dnl                        [Storage engine description],[group,group...])
dnl
dnl DESCRIPTION
dnl   Short cut for storage engine declarations
dnl
dnl ---------------------------------------------------------------------------

AC_DEFUN([MYSQL_STORAGE_ENGINE],[
 MYSQL_PLUGIN([$1], [$3], [$4], [$5])
 MYSQL_PLUGIN_DEFINE([$1], [WITH_]AS_TR_CPP([$1])[_STORAGE_ENGINE])
 ifelse([$2],[no],[],[
  _MYSQL_LEGACY_STORAGE_ENGINE(
      m4_bpatsubst([$1], -, _),
      m4_bpatsubst(m4_default([$2], [$1-storage-engine]), -, _))
 ])
])

AC_DEFUN([_MYSQL_LEGACY_STORAGE_ENGINE],[
if test "[${with_]$2[+set}]" = set; then
  [with_plugin_]$1="[$with_]$2"
fi
])


dnl ---------------------------------------------------------------------------
dnl Macro: MYSQL_PLUGIN_DEFINE
dnl
dnl SYNOPSIS
dnl   MYSQL_PLUGIN_DEFINE([name],[MYSQL_CPP_DEFINE])
dnl
dnl DESCRIPTION
dnl   When a plugin is to be statically linked, define the C macro
dnl
dnl ---------------------------------------------------------------------------

AC_DEFUN([MYSQL_PLUGIN_DEFINE],[
 MYSQL_REQUIRE_PLUGIN([$1])
 m4_define([MYSQL_PLUGIN_DEFINE_]AS_TR_CPP([$1]), [$2])
])


dnl ---------------------------------------------------------------------------
dnl Macro: MYSQL_PLUGIN_DIRECTORY
dnl
dnl SYNOPSIS
dnl   MYSQL_PLUGIN_DIRECTORY([name],[plugin/dir])
dnl
dnl DESCRIPTION
dnl   Adds a directory to the build process
dnl   if it contains 'configure' it will be picked up automatically
dnl
dnl ---------------------------------------------------------------------------

AC_DEFUN([MYSQL_PLUGIN_DIRECTORY],[
 MYSQL_REQUIRE_PLUGIN([$1])
 m4_define([MYSQL_PLUGIN_DIRECTORY_]AS_TR_CPP([$1]), [$2])
])


dnl ---------------------------------------------------------------------------
dnl Macro: MYSQL_PLUGIN_STATIC
dnl
dnl SYNOPSIS
dnl   MYSQL_PLUGIN_STATIC([name],[libmyplugin.a],[libmyplugin_embedded.a])
dnl
dnl DESCRIPTION
dnl   Declare the name for the static library
dnl
dnl   Third argument is optional, only needed for special plugins that depend
dnl   on server internals and have source files that must be compiled specially
dnl   with -DEMBEDDED_LIBRARY for embedded server. If specified, the third
dnl   argument is used to link embedded server instead of the second.
dnl
dnl ---------------------------------------------------------------------------

AC_DEFUN([MYSQL_PLUGIN_STATIC],[
 MYSQL_REQUIRE_PLUGIN([$1])
 m4_define([MYSQL_PLUGIN_STATIC_]AS_TR_CPP([$1]), [$2])
 ifelse($#, 3, [
   m4_define([MYSQL_PLUGIN_EMBEDDED_]AS_TR_CPP([$1]), [$3])
 ])
])

dnl ---------------------------------------------------------------------------
dnl Substitution variable to use to compile source files specially for
dnl embedded server.
dnl To be used by plugins that have sources that depend on server internals.
dnl ---------------------------------------------------------------------------
AC_SUBST([plugin_embedded_defs], ["-DEMBEDDED_LIBRARY -DMYSQL_SERVER"])

dnl ---------------------------------------------------------------------------
dnl Macro: MYSQL_PLUGIN_DYNAMIC
dnl
dnl SYNOPSIS
dnl  MYSQL_PLUGIN_DYNAMIC([name],[myplugin.la])
dnl
dnl DESCRIPTION
dnl   Declare the name for the shared library
dnl
dnl ---------------------------------------------------------------------------

AC_DEFUN([MYSQL_PLUGIN_DYNAMIC],[
 MYSQL_REQUIRE_PLUGIN([$1])
 m4_define([MYSQL_PLUGIN_DYNAMIC_]AS_TR_CPP([$1]), [$2])
])


dnl ---------------------------------------------------------------------------
dnl Macro: MYSQL_PLUGIN_MANDATORY
dnl
dnl SYNOPSIS
dnl   MYSQL_PLUGIN_MANDATORY([name])
dnl
dnl DESCRIPTION
dnl   Marks the specified plugin as a mandatory plugin
dnl
dnl ---------------------------------------------------------------------------

AC_DEFUN([MYSQL_PLUGIN_MANDATORY],[
 MYSQL_REQUIRE_PLUGIN([$1])
 _MYSQL_PLUGIN_MANDATORY([$1],
  [MYSQL_PLUGIN_MANDATORY_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_DISABLED_]AS_TR_CPP([$1])
 )
])

AC_DEFUN([_MYSQL_PLUGIN_MANDATORY],[
 m4_define([$2], [yes])
 m4_ifdef([$3], [
  AC_FATAL([mandatory plugin $1 has been disabled])
  m4_undefine([$2])
 ])
])


dnl ---------------------------------------------------------------------------
dnl Macro: MYSQL_PLUGIN_DISABLED
dnl
dnl SYNOPSIS
dnl   MYSQL_PLUGIN_DISABLED([name])
dnl
dnl DESCRIPTION
dnl   Marks the specified plugin as a disabled plugin
dnl
dnl ---------------------------------------------------------------------------

AC_DEFUN([MYSQL_PLUGIN_DISABLED],[
 MYSQL_REQUIRE_PLUGIN([$1])
 _MYSQL_PLUGIN_DISABLED([$1], 
  [MYSQL_PLUGIN_DISABLED_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_MANDATORY_]AS_TR_CPP([$1])
 )
])

AC_DEFUN([_MYSQL_PLUGIN_DISABLED],[
 m4_define([$2], [yes])
 m4_ifdef([$3], [
  AC_FATAL([attempt to disable mandatory plugin $1])
  m4_undefine([$2])
 ])
])


dnl ---------------------------------------------------------------------------
dnl Macro: MYSQL_PLUGIN_WITHOUT
dnl
dnl SYNOPSIS
dnl   MYSQL_PLUGIN_WITHOUT([name])
dnl
dnl DESCRIPTION
dnl   Exclude the plugin from being built, as if --without-plugin-name
dnl   was specified.
dnl   If the plugin was selected manually by --with-plugin-name,
dnl   excluding it here will abort the configure script with an error,
dnl   otherwise plugin will be silently disabled.
dnl
dnl ---------------------------------------------------------------------------

AC_DEFUN([MYSQL_PLUGIN_WITHOUT],[
 MYSQL_REQUIRE_PLUGIN([$1])
 if test "X[$with_plugin_]$1" = Xyes; then
   AC_MSG_ERROR([Plugin $1 cannot be built])
 else
   [mysql_plugin_]$1=no
 fi
])

dnl ---------------------------------------------------------------------------
dnl Macro: MYSQL_PLUGIN_DEPENDS
dnl
dnl SYNOPSIS
dnl   MYSQL_PLUGIN_DEPENDS([name],[prereq,prereq...])
dnl
dnl DESCRIPTION
dnl   Enables other plugins neccessary for the named plugin
dnl   Dependency checking is not recursive so if any 
dnl   required plugin requires further plugins, list them
dnl   here too!
dnl
dnl ---------------------------------------------------------------------------

AC_DEFUN([MYSQL_PLUGIN_DEPENDS],[
 MYSQL_REQUIRE_PLUGIN([$1])
 ifelse($#, 2, [
  _MYSQL_PLUGIN_DEPEND([$1], $2)
 ], [
  AC_FATAL([bad number of arguments])
 ])
])

AC_DEFUN([_MYSQL_PLUGIN_DEPEND],[
 ifelse($#, 1, [], [$#:$2], [2:], [], [
  MYSQL_REQUIRE_PLUGIN([$2])
  _MYSQL_PLUGAPPEND([__mysql_plugdepends_$1__],[$2])
  _MYSQL_PLUGIN_DEPEND([$1], m4_shift(m4_shift($@)))
 ])
])


dnl ---------------------------------------------------------------------------
dnl Macro: MYSQL_PLUGIN_ACTIONS
dnl
dnl SYNOPSIS
dnl   MYSQL_PLUGIN_ACTIONS([name],[PLUGIN_CONFIGURE_STUFF])
dnl
dnl DESCRIPTION
dnl   Declares additional autoconf actions required to configure the plugin
dnl
dnl ---------------------------------------------------------------------------

AC_DEFUN([MYSQL_PLUGIN_ACTIONS],[
 MYSQL_REQUIRE_PLUGIN([$1])
 m4_ifdef([$2],[
   m4_define([MYSQL_PLUGIN_ACTIONS_]AS_TR_CPP([$1]),m4_defn([$2]))
 ],[
   m4_define([MYSQL_PLUGIN_ACTIONS_]AS_TR_CPP([$1]), [$2])
 ])
])

dnl ---------------------------------------------------------------------------
dnl Macro: MYSQL_CONFIGURE_PLUGINS
dnl
dnl SYNOPSIS
dnl   MYSQL_CONFIGURE_PLUGINS([name,name...])
dnl
dnl DESCRIPTION
dnl   Used last, emits all required shell code to configure the plugins
dnl   Argument is a list of default plugins or meta-plugin
dnl
dnl ---------------------------------------------------------------------------

AC_DEFUN([MYSQL_CONFIGURE_PLUGINS],[
 m4_ifdef([__mysql_plugin_configured__],[
   AC_FATAL([cannot use [MYSQL_CONFIGURE_PLUGINS] multiple times])
 ],[
   m4_define([__mysql_plugin_configured__],[done])
   _MYSQL_INCLUDE_LIST(
   m4_bpatsubst(m4_esyscmd([ls plugin/*/plug.in storage/*/plug.in 2>/dev/null]),
[[ 
]],[,]))
   m4_ifdef([__mysql_plugin_list__],[
    _MYSQL_CHECK_PLUGIN_ARGS([$1])
    _MYSQL_CONFIGURE_PLUGINS(m4_bpatsubst(__mysql_plugin_list__, :, [,]))
    _MYSQL_EMIT_PLUGIN_ACTIONS(m4_bpatsubst(__mysql_plugin_list__, :, [,]))
    AC_SUBST([mysql_se_dirs])
    AC_SUBST([mysql_se_distdirs])
    AC_SUBST([mysql_pg_dirs])
    AC_SUBST([mysql_pg_distdirs])
    AC_SUBST([mysql_se_unittest_dirs])
    AC_SUBST([mysql_pg_unittest_dirs])
    AC_SUBST([condition_dependent_plugin_modules])
    AC_SUBST([condition_dependent_plugin_objects])
    AC_SUBST([condition_dependent_plugin_links])
    AC_SUBST([condition_dependent_plugin_includes])
   ])
 ])
])

AC_DEFUN([_MYSQL_CONFIGURE_PLUGINS],[
 ifelse($#, 0, [], $#, 1, [
  _MYSQL_EMIT_CHECK_PLUGIN([$1])
 ],[
  _MYSQL_EMIT_CHECK_PLUGIN([$1])
  _MYSQL_CONFIGURE_PLUGINS(m4_shift($@))
 ])
])

AC_DEFUN([_MYSQL_EMIT_CHECK_PLUGIN],[
 __MYSQL_EMIT_CHECK_PLUGIN(
  [$1],
  m4_bpatsubst([$1], -, _),
  [MYSQL_PLUGIN_NAME_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_DESC_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_DEFINE_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_DIRECTORY_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_STATIC_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_DYNAMIC_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_MANDATORY_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_DISABLED_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_EMBEDDED_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_ACTIONS_]AS_TR_CPP([$1])
 )
])

dnl __MYSQL_EMIT_CHECK_PLUGIN arguments:
dnl
dnl  1 - plugin identifying name
dnl  2 - plugin identifying name, with `-' replaced by `_'
dnl  3 - plugin long name
dnl  4 - plugin description
dnl  5 - mysql_plugin_define (eg. WITH_xxx_STORAGE_ENGINE)
dnl  6 - directory
dnl  7 - static target (if supports static build)
dnl  8 - dynamic target (if supports dynamic build)
dnl  9 - mandatory flag
dnl 10 - disabled flag
dnl 11 - static target for libmysqld (if different from $7)
dnl 12 - actions
AC_DEFUN([__MYSQL_EMIT_CHECK_PLUGIN],[
 m4_ifdef([$5],[
  AH_TEMPLATE($5, [Include ]$3[ into mysqld])
 ])
 AC_MSG_CHECKING([whether to use ]$3)
 mysql_use_plugin_dir=""
 m4_ifdef([$10],[
  if test "X[$mysql_plugin_]$2" = Xyes -a \
          "X[$with_plugin_]$2" != Xno -o \
          "X[$with_plugin_]$2" = Xyes; then
    __MYSQL_EMIT_CHECK_RESULT($3,[error])
    AC_MSG_ERROR([disabled])
  fi
  __MYSQL_EMIT_CHECK_RESULT($3,[no])
 ],[

  if test "X[$mysql_plugin_]$2" = Xno; then
    [with_plugin_]$2=no
  fi

  # Plugin is not disabled, determine if it should be built,
  # or only distributed

  m4_ifdef([$6], [
    if test ! -d "$srcdir/$6"; then
      # Plugin directory was removed after autoconf was run; treat
      # this as a disabled plugin
      if test "X[$with_plugin_]$2" = Xyes; then
        __MYSQL_EMIT_CHECK_RESULT($3,[error])
        AC_MSG_ERROR([disabled])
      fi

      # The result message will be printed below
      [with_plugin_]$2=no
    fi
  ])

  m4_ifdef([$9],[
   if test "X[$with_plugin_]$2" = Xno; then
     __MYSQL_EMIT_CHECK_RESULT($3,[error])
     AC_MSG_ERROR([cannot disable mandatory plugin])
   fi
   [mysql_plugin_]$2=yes
  ],[
   case "$with_mysqld_ldflags " in
     *"-all-static "*)
       # No need to build shared plugins when mysqld is linked with
       # -all-static as it won't be able to load them.
       if test "X[$mysql_plugin_]$2" != Xyes -a \
               "X[$with_plugin_]$2" != Xyes; then
	     [with_plugin_]$2=no
	   fi
     ;;
   esac
   # Similarly, disable shared plugins when configured with --disable-shared
   # as libtool will not be able to produce them
   if test "X[$enable_shared]" = Xno; then
     if test "X[$mysql_plugin_]$2" != Xyes -a \
             "X[$with_plugin_]$2" != Xyes; then
       [with_plugin_]$2=no
     fi
   fi
  ])


  if test "X[$with_plugin_]$2" = Xno; then
    __MYSQL_EMIT_CHECK_RESULT($3,[no])
  else
    m4_ifdef([$8],m4_ifdef([$7],[],[[with_plugin_]$2='']))
    if test "X[$mysql_plugin_]$2" != Xyes -a \
            "X[$with_plugin_]$2" != Xyes; then
      m4_ifdef([$8],[
       m4_ifdef([$6],[
         if test -d "$srcdir/$6" ; then
           mysql_use_plugin_dir="$6"
       ])
       AC_SUBST([plugin_]$2[_shared_target], "$8")
       AC_SUBST([plugin_]$2[_static_target], [""])
       AC_SUBST([plugin_]$2[_embedded_static_target], [""])
       [with_plugin_]$2=yes
       __MYSQL_EMIT_CHECK_RESULT($3,[plugin])
       m4_ifdef([$6],[
         else
           [with_plugin_]$2=no
           __MYSQL_EMIT_CHECK_RESULT($3,[no])
         fi
       ])
      ],[
       [with_plugin_]$2=no
       __MYSQL_EMIT_CHECK_RESULT($3,[no])
      ])
    else
      m4_ifdef([$7],[
       ifelse(m4_bregexp($7, [^\\\$]), 0, [
        m4_ifdef([$6],[
         mysql_use_plugin_dir="$6"
        ])
        mysql_plugin_libs="$mysql_plugin_libs $7"
        m4_ifdef([$11],[
          mysql_embedded_plugin_libs="$mysql_embedded_plugin_libs $11"
        ],[
          mysql_embedded_plugin_libs="$mysql_embedded_plugin_libs $7"
        ])
       ], [
        m4_ifdef([$6],[
         mysql_use_plugin_dir="$6"
         mysql_plugin_libs="$mysql_plugin_libs \$(top_builddir)/$6/$7"
         m4_ifdef([$11],[
           mysql_embedded_plugin_libs="$mysql_embedded_plugin_libs \$(top_builddir)/$6/$11"
         ],[
           mysql_embedded_plugin_libs="$mysql_embedded_plugin_libs \$(top_builddir)/$6/$7"
         ])
        ],[
         mysql_plugin_libs="$mysql_plugin_libs $7"
         m4_ifdef([$11],[
           mysql_embedded_plugin_libs="$mysql_embedded_plugin_libs $11"
         ],[
           mysql_embedded_plugin_libs="$mysql_embedded_plugin_libs $7"
         ])
        ])
       ])
       m4_ifdef([$5],[
        AC_DEFINE($5)
       ])
       AC_SUBST([plugin_]$2[_static_target], "$7")
       m4_ifdef([$11], [
         if test "$with_embedded_server" = "yes"; then
           AC_SUBST([plugin_]$2[_embedded_static_target], "$11")
         else
           AC_SUBST([plugin_]$2[_embedded_static_target], [""])
         fi
       ], [
         AC_SUBST([plugin_]$2[_embedded_static_target], [""])
       ])
       AC_SUBST([plugin_]$2[_shared_target], [""])
      ],[
       m4_ifdef([$6],[
        __MYSQL_EMIT_CHECK_RESULT($3,[error])
        AC_MSG_ERROR([Plugin $1 does not support static linking])
       ],[
        m4_ifdef([$5],[
         AC_DEFINE($5)
         AC_SUBST([plugin_]$2[_static_target], ["yes"])
         AC_SUBST([plugin_]$2[_shared_target], [""])
        ])
       ])
      ])
      maria_plugin_defs="$maria_plugin_defs, [builtin_maria_]$2[_plugin]"
      [with_plugin_]$2=yes
      __MYSQL_EMIT_CHECK_RESULT($3,[yes])
    fi
  fi

  m4_ifdef([$6], [
    if test -d "$srcdir/$6"; then
      # Even if we don't build a plugin, we bundle its source into the dist
      # file.  So its Makefile (and Makefiles for any subdirs) must be
      # generated for 'make dist' to work.
      m4_syscmd([test -f "]$6[/configure"])
      ifelse(m4_sysval, 0,
        [AC_CONFIG_SUBDIRS($6)],
        [
          # autoconf doesn't provide an automatic way to configure DIST_SUBDIRS of
          # a subdir; for our purposes, it's enough to just check for existing
          # Makefile.am files and add them in here
dnl
dnl Warning, don't try to quote the m4_esyscmd() macro, it doesn't
dnl work.  Quoting here is tricky.
dnl
dnl The $FIND or $SED variable can be set by the user when calling autoconf itself
dnl to if they need to pass a specific path.  This is *NOT* used when calling
dnl running configure!
dnl
          AC_CONFIG_FILES(m4_esyscmd([${FIND-find} "]$6[" -name Makefile.am -print | ${SED-sed} 's,\.am$,,']))
        ]
      )

      ifelse(
        m4_substr($6, 0, 8), [storage/], [
          mysql_se_distdirs="$mysql_se_distdirs m4_substr($6, 8)"
          if test -n "$mysql_use_plugin_dir" ; then
            mysql_se_dirs="$mysql_se_dirs m4_substr($6, 8)"
            mysql_se_unittest_dirs="$mysql_se_unittest_dirs ../$6"
          fi],

        m4_substr($6, 0, 7), [plugin/], [
          mysql_pg_distdirs="$mysql_pg_distdirs m4_substr($6, 7)"
          if test -n "$mysql_use_plugin_dir" ; then
            mysql_pg_dirs="$mysql_pg_dirs m4_substr($6, 7)"
            mysql_pg_unittest_dirs="$mysql_pg_unittest_dirs ../$6"
          fi],
        [AC_FATAL([don't know how to handle plugin dir ]$6)])
    fi
  ])
 ])
])

AC_DEFUN([__MYSQL_EMIT_CHECK_RESULT],[
  AC_MSG_RESULT($2)
  plugin_report="[$plugin_report]
m4_format([  * %-32s $2],$1:)"
])

AC_DEFUN([_MYSQL_EMIT_PLUGIN_ACTIONS],[
 ifelse($#, 0, [], $#, 1, [
  _MYSQL_EMIT_PLUGIN_ACTION([$1])
 ],[
  _MYSQL_EMIT_PLUGIN_ACTION([$1])
  _MYSQL_EMIT_PLUGIN_ACTIONS(m4_shift($@))
 ])
])

AC_DEFUN([_MYSQL_EMIT_PLUGIN_ACTION],[
 __MYSQL_EMIT_PLUGIN_ACTION(
  [$1],
  m4_bpatsubst([$1], -, _),
  [MYSQL_PLUGIN_DISABLED_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_ACTIONS_]AS_TR_CPP([$1])
 )
])


AC_DEFUN([__MYSQL_EMIT_PLUGIN_ACTION],[
 m4_ifdef([$3], [], [
  if test "X[$with_plugin_]$2" = Xyes; then
    if test "X[$plugin_]$2[_static_target]" = X -a \
            "X[$plugin_]$2[_shared_target]" = X; then
      AC_MSG_ERROR([that's strange, $1 failed sanity check])
    fi
    $4
  fi
 ])
])



dnl ===========================================================================
dnl  Private helper macros
dnl ===========================================================================


dnl SYNOPSIS
dnl   MYSQL_REQUIRE_PLUGIN([name])
dnl
dnl DESCRIPTION
dnl   Checks that the specified plugin does exist

AC_DEFUN([MYSQL_REQUIRE_PLUGIN],[
 _MYSQL_REQUIRE_PLUGIN([$1], [__MYSQL_PLUGIN_]AS_TR_CPP([$1])[__])
])

define([_MYSQL_REQUIRE_PLUGIN],[
 ifdef([$2],[
  ifelse($2, [$1], [], [
   AC_FATAL([Misspelt MYSQL_PLUGIN declaration for $1])
  ])
 ],[
  AC_FATAL([Missing MYSQL_PLUGIN declaration for $1])
 ])
])


dnl ---------------------------------------------------------------------------


dnl SYNOPSIS
dnl   _MYSQL_EMIT_METAPLUGINS([name,name...])
dnl
dnl DESCRIPTION
dnl   Emits shell code for metaplugins

AC_DEFUN([_MYSQL_EMIT_METAPLUGINS], [ifelse($#, 0, [], $#, 1,
[_MYSQL_EMIT_METAPLUGIN([$1], [__mysql_]m4_bpatsubst($1, -, _)[_plugins__])
],
[_MYSQL_EMIT_METAPLUGIN([$1], [__mysql_]m4_bpatsubst($1, -, _)[_plugins__])
_MYSQL_EMIT_METAPLUGINS(m4_shift($@))])
])

AC_DEFUN([_MYSQL_EMIT_METAPLUGIN], [
  [$1] )
m4_ifdef([$2], [
    mysql_plugins='m4_bpatsubst($2, :, [ ])'
],[
    mysql_plugins=''
])
    ;;
])


dnl ---------------------------------------------------------------------------


dnl SYNOPSIS
dnl   _MYSQL_PLUGAPPEND([name],[to-append])
dnl
dnl DESCRIPTION
dnl   Helper macro for appending to colon-delimited lists
dnl   Optinal 3rd argument is for actions only required when defining
dnl   macro named for the first time.

AC_DEFUN([_MYSQL_PLUGAPPEND],[
 m4_ifdef([$1],[
  m4_define([__plugin_append_tmp__], m4_defn([$1]))
  m4_undefine([$1])
  m4_define([$1], __plugin_append_tmp__[:$2])
  m4_undefine([__plugin_append_tmp__])
 ],[
  m4_define([$1], [$2])
  $3
 ])
])


dnl SYNOPSIS
dnl   _MYSQL_PLUGAPPEND_META([name],[meta,meta...])
dnl
dnl DESCRIPTION
dnl   Helper macro for adding plugins to meta plugins

AC_DEFUN([_MYSQL_PLUGAPPEND_META],[
 ifelse($#, 1, [], [$#:$2], [2:], [], [$2], [all], [
  AC_FATAL([protected plugin group: all])
 ], [$2], [none], [
  AC_FATAL([protected plugin group: none])
 ],[
  _MYSQL_PLUGAPPEND([__mysql_$1_configs__],[$2])
  _MYSQL_PLUGAPPEND([__mysql_]m4_bpatsubst($2, -, _)[_plugins__],[$1], [
   _MYSQL_PLUGAPPEND([__mysql_metaplugin_list__],[$2])
  ])
  _MYSQL_PLUGAPPEND_META([$1], m4_shift(m4_shift($@)))
 ])
])


dnl ---------------------------------------------------------------------------


dnl SYNOPSIS
dnl   MYSQL_LIST_PLUGINS
dnl
dnl DESCRIPTION
dnl   Emits formatted list of declared plugins

AC_DEFUN([MYSQL_LIST_PLUGINS],[dnl
 m4_ifdef([__mysql_plugin_list__],[dnl
  _MYSQL_LIST_PLUGINS(m4_bpatsubst(__mysql_plugin_list__, :, [,]))dnl
 ])dnl
])

AC_DEFUN([_MYSQL_LIST_PLUGINS],[dnl
 ifelse($#, 0, [], $#, 1, [dnl
  MYSQL_SHOW_PLUGIN([$1])dnl
 ],[dnl
  MYSQL_SHOW_PLUGIN([$1])dnl
  _MYSQL_LIST_PLUGINS(m4_shift($@))dnl
 ])dnl
])

AC_DEFUN([MYSQL_SHOW_PLUGIN],[
 _MYSQL_SHOW_PLUGIN(
  [$1],
  [$1-plugin],
  [MYSQL_PLUGIN_NAME_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_DESC_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_DEFINE_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_DIRECTORY_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_STATIC_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_DYNAMIC_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_MANDATORY_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_DISABLED_]AS_TR_CPP([$1]),
  [MYSQL_PLUGIN_ACTIONS_]AS_TR_CPP([$1]),
  __mysql_[$1]_configs__,
 )
])

AC_DEFUN([_MYSQL_SHOW_PLUGIN],[dnl
  === $3 ===
  Plugin Name:      [$1]
  Description:      $4
  Supports build:   _PLUGIN_BUILD_TYPE([$7],[$8])[]dnl
m4_ifdef([$12],[
  Configurations:   m4_bpatsubst($12, :, [, ])])[]dnl
m4_ifdef([$10],[
  Status:           disabled])[]dnl
m4_ifdef([$9],[
  Status:           mandatory])[]dnl
])

AC_DEFUN([_PLUGIN_BUILD_TYPE],
[m4_ifdef([$1],[static ]m4_ifdef([$2],[and dnl
]))[]m4_ifdef([$2],[dynamic],[m4_ifdef([$1],[],[static])])])


dnl ---------------------------------------------------------------------------


AC_DEFUN([_MYSQL_EMIT_PLUGINS],[
 ifelse($#, 0, [], [$#:$1], [1:], [], [
  m4_ifdef([MYSQL_PLUGIN_ACTIONS_]AS_TR_CPP([$1]), [], [
   m4_define([MYSQL_PLUGIN_ACTIONS_]AS_TR_CPP([$1]),[ ])
  ])
    [$1] )
  m4_ifdef([MYSQL_PLUGIN_DISABLED_]AS_TR_CPP([$1]),[
      AC_MSG_ERROR([plugin $1 is disabled])
  ],[
    _MYSQL_EMIT_PLUGIN_ENABLE([$1], m4_bpatsubst([$1], -, _),
      [MYSQL_PLUGIN_NAME_]AS_TR_CPP([$1]),
      [MYSQL_PLUGIN_STATIC_]AS_TR_CPP([$1]),
      [MYSQL_PLUGIN_DYNAMIC_]AS_TR_CPP([$1]))
  ])
      ;;
  _MYSQL_EMIT_PLUGINS(m4_shift($@))
 ])
])

AC_DEFUN([_MYSQL_EMIT_PLUGIN_ENABLE],[
    if test "X[$mysql_plugin_]$2" = Xno -a \
            "X[$with_plugin_]$2" != Xno; then
      AC_MSG_ERROR([Plugin $1 cannot be built])
    fi
    m4_ifdef([$5],m4_ifdef([$4],[
      [mysql_plugin_]$2=yes
    ],[
      AC_MSG_WARN([$3 can only be built as a plugin])
    ]),[
      [mysql_plugin_]$2=yes
    ])      
])

AC_DEFUN([_MYSQL_EMIT_PLUGIN_DEPENDS], [
 ifelse($#, 0, [], [$#:$1], [1:], [], [
  _MYSQL_EMIT_CHECK_DEPENDS(m4_bpatsubst([$1], -, _), 
                            [__mysql_plugdepends_$1__])
  _MYSQL_EMIT_PLUGIN_DEPENDS(m4_shift($@))
 ])
])

AC_DEFUN([_MYSQL_EMIT_CHECK_DEPENDS], [
 m4_ifdef([$2], [
   if test "X[$mysql_plugin_]$1" = Xyes -a \
           "X[$with_plugin_]$1" != Xno -o \
           "X[$with_plugin_]$1" = Xyes; then
     _MYSQL_EMIT_PLUGIN_DEPENDENCIES(m4_bpatsubst($2, :, [,]))
   fi
 ])
])

AC_DEFUN([_MYSQL_EMIT_PLUGIN_DEPENDENCIES], [
 ifelse([$1], [], [], [
  m4_ifdef([MYSQL_PLUGIN_DISABLED_]AS_TR_CPP([$1]),[
       AC_MSG_ERROR([depends upon disabled plugin $1])
  ],[
       [mysql_plugin_]m4_bpatsubst([$1], -, _)=yes
       if test "X[$with_plugin_]m4_bpatsubst([$1], -, _)" = Xno; then
         AC_MSG_ERROR([depends upon disabled plugin $1])
       fi
  ])
  _MYSQL_EMIT_PLUGIN_DEPENDENCIES(m4_shift($@))
 ])
])

dnl SYNOPSIS
dnl   _MYSQL_CHECK_PLUGIN_ARGS([plugin],[plugin]...)
dnl
dnl DESCRIPTION
dnl   Emits shell script for checking configure arguments
dnl   Arguments to this macro is default value for selected plugins

AC_DEFUN([_MYSQL_CHECK_PLUGIN_ARGS],[
 __MYSQL_CHECK_PLUGIN_ARGS(m4_default([$1], [default]))
])

AC_DEFUN([__MYSQL_CHECK_PLUGIN_ARGS],[
 AC_ARG_WITH([plugins],
AS_HELP_STRING([--with-plugins=PLUGIN[[[[[,PLUGIN..]]]]]],
               [Plugins to include in mysqld. Must be a
                configuration name or a comma separated list of plugins.])
AS_HELP_STRING([],
               [Available configurations are:] dnl
m4_bpatsubst([none:]m4_ifdef([__mysql_metaplugin_list__],
             __mysql_metaplugin_list__:)[all], :, [ ])[.])
AS_HELP_STRING([],
               [Available plugins are:] dnl
m4_bpatsubst(__mysql_plugin_list__, :, [ ])[.])
AS_HELP_STRING([--without-plugin-PLUGIN],
               [Disable the named plugin from being built. Otherwise, for
                plugins which are not selected for inclusion in mysqld will be
                built dynamically (if supported)])
AS_HELP_STRING([--with-plugin-PLUGIN],
               [Forces the named plugin to be linked into mysqld statically.]),
 [mysql_plugins="`echo $withval | tr ',.:;*[]' '       '`"],
 [mysql_plugins=['$1']])

m4_divert_once([HELP_VAR_END],[
Description of plugins:
MYSQL_LIST_PLUGINS])

  case "$mysql_plugins" in
  all )
    mysql_plugins='m4_bpatsubst(__mysql_plugin_list__, :, [ ])'
    ;;
  none )
    mysql_plugins=''
    ;;
m4_ifdef([__mysql_metaplugin_list__],[
_MYSQL_EMIT_METAPLUGINS(m4_bpatsubst(__mysql_metaplugin_list__, :, [,]))
])
  esac

  for plugin in $mysql_plugins; do
    case "$plugin" in
    all | none )
      AC_MSG_ERROR([bad plugin name: $plugin])
      ;;
_MYSQL_EMIT_PLUGINS(m4_bpatsubst(__mysql_plugin_list__, :, [,]))
    * )
      AC_MSG_ERROR([unknown plugin: $plugin])
      ;;
    esac
  done

  _MYSQL_EMIT_PLUGIN_DEPENDS(m4_bpatsubst(__mysql_plugin_list__, :, [,]))
])

dnl ---------------------------------------------------------------------------
dnl Macro: _MYSQL_INCLUDE_LIST
dnl
dnl SYNOPSIS
dnl   _MYSQL_INCLUDE_LIST([filename,filename...])
dnl
dnl DESCRIPTION
dnl   includes all files from the list
dnl
dnl ---------------------------------------------------------------------------
AC_DEFUN([_MYSQL_INCLUDE_LIST],[
 ifelse([$1], [], [], [
  m4_define([__mysql_include__],[$1])
  dnl We have to use builtin(), because sinclude would generate an error
  dnl "file $1 does not exists" in aclocal-1.8 - which is a bug, clearly
  dnl violating m4 specs, and which is fixed in aclocal-1.9
  builtin([include],$1)
  m4_undefine([__mysql_include__])
  _MYSQL_INCLUDE_LIST(m4_shift($@))
 ])
])

dnl ===========================================================================