~drizzle-trunk/drizzle/development

#!/usr/bin/python

# Find plugins in the tree and add them to the build system 

import os, ConfigParser, sys

top_srcdir='.'

top_builddir='.'

plugin_ini_fname='plugin.ini'

plugin_list=[]

autogen_header="This file is generated, re-run %s to rebuild\n" % sys.argv[0]

if len(sys.argv)>1:

  top_srcdir=sys.argv[1]

  top_builddir=top_srcdir

if len(sys.argv)>2:

  top_builddir=sys.argv[2]

plugin_ac=open(os.path.join(top_builddir,'config','plugin.ac.new'),'w')

plugin_am=open(os.path.join(top_srcdir,'config','plugin.am.new'),'w')

plugin_ac.write("dnl %s" % autogen_header)

plugin_am.write("# %s" % autogen_header)

def accumulate_plugins(arg, dirname, fnames):

  if plugin_ini_fname in fnames:

    arg.append(dirname)

os.path.walk(top_srcdir,accumulate_plugins,plugin_list)

for plugin_dir in plugin_list:

  plugin_file= os.path.join(plugin_dir,plugin_ini_fname)

  parser=ConfigParser.ConfigParser(defaults=dict(sources="",cflags="",cppflags="",cxxflags="", libs="", ldflags=""))

  parser.read(plugin_file)

  plugin=dict(parser.items('plugin'))

  plugin['rel_path']= plugin_dir[len(top_srcdir)+len(os.path.sep):]

  # TODO: determine path to plugin dir relative to top_srcdir... append it

  # to source files if they don't already have it

  new_sources=""

  for src in plugin['sources'].split():

    if not src.startswith(plugin['rel_path']):

      src= os.path.join(plugin['rel_path'], src)

      new_sources= "%s %s" % (new_sources, src)

  plugin['sources']= new_sources

  if plugin.has_key('load_by_default'):

    plugin['load_by_default']=parser.getboolean('plugin','load_by_default')

  else:

    plugin['load_by_default']=False

  # Make a yes/no version for autoconf help messages

  if plugin['load_by_default']:

    plugin['default_yesno']="yes"

  else:

    plugin['default_yesno']="no"

  plugin_ac_file=os.path.join(plugin['rel_path'],'plugin.ac')

  plugin_am_file=os.path.join(plugin['rel_path'],'plugin.am')

  plugin_m4_dir=os.path.join(plugin['rel_path'],'m4')

  plugin_m4_files=[]

  if os.path.exists(plugin_m4_dir) and os.path.isdir(plugin_m4_dir):

    for m4_file in os.listdir(plugin_m4_dir):

      if os.path.splitext(m4_file)[-1] == '.m4':

        plugin_m4_files.append(os.path.join(plugin['rel_path'], m4_file))

  plugin['build_conditional_tag']= "BUILD_%s_PLUGIN" % plugin['name'].upper()

  if plugin.has_key('build_conditional'):

    plugin['has_build_conditional']=True

  else:

    plugin['has_build_conditional']=False

    plugin['build_conditional']='"x${with_%(name)s_plugin}" = "xyes"' %plugin

  # Turn this on later plugin_lib%(name)s_plugin_la_CPPFLAGS=$(AM_CPPFLAGS) -DDRIZZLE_DYNAMIC_PLUGIN %(cppflags)s

  #

  # Write plugin build instructions into plugin.am file.

  #

  plugin_am.write("""

plugin_lib%(name)s_dir=${top_srcdir}/%(rel_path)s

if %(build_conditional_tag)s

  noinst_LTLIBRARIES+=plugin/lib%(name)s_plugin.la

  plugin_lib%(name)s_plugin_la_LIBADD=%(libs)s

  plugin_lib%(name)s_plugin_la_LDFLAGS=$(AM_LDFLAGS) %(ldflags)s

  plugin_lib%(name)s_plugin_la_CPPFLAGS=$(AM_CPPFLAGS) %(cppflags)s

  plugin_lib%(name)s_plugin_la_CXXFLAGS=$(AM_CXXFLAGS) %(cxxflags)s

  plugin_lib%(name)s_plugin_la_CFLAGS=$(AM_CFLAGS) %(cflags)s

  plugin_lib%(name)s_plugin_la_SOURCES=%(sources)s

endif

""" % plugin)

  # Add this once we're actually doing dlopen (and remove -avoid-version if

  # we move to ltdl

  #pkgplugin_LTLIBRARIES+=plugin/lib%(name)s_plugin.la

  #plugin_lib%(name)s_plugin_la_LDFLAGS=-module -avoid-version -rpath $(pkgplugindir) %(libs)s

  # Add this and remove $drizzled_plugin_libs once drizzled is built from .

  #drizzled_drizzled_LDADD+=${top_builddir}/plugin/lib%(name)s_plugin.la

  if os.path.exists(plugin_am_file):

    plugin_am.write('include %s\n' % plugin_am_file) 

  #

  # Write plugin config instructions into plugin.am file.

  #

  plugin_ac.write("\n\ndnl Config for %(title)s\n" % plugin)

  for m4_file in plugin_m4_files:

    plugin_ac.write('m4_sinclude([%s])\n' % m4_file) 

  plugin_ac.write("""

AC_ARG_WITH([plugin-%(name)s],[

dnl indented werid to make the help output correct

AS_HELP_STRING([--with-%(name)s-plugin],[Build %(title)s and enable it. @<:@default=%(default_yesno)s@:>@])

AS_HELP_STRING([--without-%(name)s-plugin],[Disable building %(title)s])

  ],

  [with_%(name)s_plugin="$withval"],

  [AS_IF([test "x$ac_with_all_plugins" = "yes"],

         [with_%(name)s_plugin=yes],

         [with_%(name)s_plugin=%(default_yesno)s])])

""" % plugin)

  if os.path.exists(plugin_ac_file):

    plugin_ac.write('m4_sinclude([%s])\n' % plugin_ac_file) 

  # The plugin author has specified some check to make to determine

  # if the plugin can be built. If the plugin is turned on and this 

  # check fails, then configure should error out. If the plugin is not

  # turned on, then the normal conditional build stuff should just let

  # it silently not build

  if plugin['has_build_conditional']:

    plugin_ac.write("""

AS_IF([test "x$with_%(name)s_plugin" = "xyes" -a !%(build_conditional)s],

      [Build prerequisites not found for %(title)s, yet it was slated to be enabled by default. Aborting!])""" % plugin)

  plugin_ac.write("""

AM_CONDITIONAL([%(build_conditional_tag)s],

               [test %(build_conditional)s])

AS_IF([test "x$with_%(name)s_plugin" = "xyes"],

      [

        drizzled_default_plugin_list="%(name)s,${drizzled_default_plugin_list}"

        drizzled_builtin_list="builtin_%(name)s_plugin,${drizzled_builtin_list}"

        drizzled_plugin_libs="${drizzled_plugin_libs} \${top_builddir}/plugin/lib%(name)s_plugin.la"

	DRIZZLED_PLUGIN_DEP_LIBS="${DRIZZLED_PLUGIN_DEP_LIBS} %(libs)s"

      ])

""" % plugin)

plugin_ac.close()

plugin_am.close()

# We've written all of this out into .new files, now we only copy them

# over the old ones if they are different, so that we don't cause 

# unnecessary recompiles

for f in ('plugin.ac','plugin.am'):

  fname= os.path.join(top_builddir,'config',f)

  if os.system('diff %s.new %s >/dev/null 2>&1' % (fname,fname)):

    try:

      os.unlink(fname)

    except:

      pass

    os.rename('%s.new' % fname, fname)

  try:

    os.unlink("%s.new" % fname)

  except:

    pass