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#!/usr/bin/env python
# encoding: utf-8
# Ali Sabil, 2007

To use this module do not forget to call

Add options for the standard GNU directories, this tool will add the options
found in autotools, and will update the environment with the following
installation variables:

 * PREFIX : architecture-independent files [/usr/local]
 * EXEC_PREFIX : architecture-dependent files [PREFIX]
 * BINDIR : user executables [EXEC_PREFIX/bin]
 * SBINDIR : user executables [EXEC_PREFIX/sbin]
 * LIBEXECDIR : program executables [EXEC_PREFIX/libexec]
 * SYSCONFDIR : read-only single-machine data [PREFIX/etc]
 * SHAREDSTATEDIR : modifiable architecture-independent data [PREFIX/com]
 * LOCALSTATEDIR : modifiable single-machine data [PREFIX/var]
 * LIBDIR : object code libraries [EXEC_PREFIX/lib]
 * INCLUDEDIR : C header files [PREFIX/include]
 * OLDINCLUDEDIR : C header files for non-gcc [/usr/include]
 * DATAROOTDIR : read-only arch.-independent data root [PREFIX/share]
 * DATADIR : read-only architecture-independent data [DATAROOTDIR]
 * INFODIR : info documentation [DATAROOTDIR/info]
 * LOCALEDIR : locale-dependent data [DATAROOTDIR/locale]
 * MANDIR : man documentation [DATAROOTDIR/man]
 * DOCDIR : documentation root [DATAROOTDIR/doc/telepathy-glib]
 * HTMLDIR : html documentation [DOCDIR]
 * DVIDIR : dvi documentation [DOCDIR]
 * PDFDIR : pdf documentation [DOCDIR]
 * PSDIR : ps documentation [DOCDIR]

import Utils, Options

_options = [x.split(', ') for x in '''
bindir, user executables, ${EXEC_PREFIX}/bin
sbindir, system admin executables, ${EXEC_PREFIX}/sbin
libexecdir, program executables, ${EXEC_PREFIX}/libexec
sysconfdir, read-only single-machine data, ${PREFIX}/etc
sharedstatedir, modifiable architecture-independent data, ${PREFIX}/com
localstatedir, modifiable single-machine data, ${PREFIX}/var
libdir, object code libraries, ${EXEC_PREFIX}/lib
includedir, C header files, ${PREFIX}/include
oldincludedir, C header files for non-gcc, /usr/include
datarootdir, read-only arch.-independent data root, ${PREFIX}/share
datadir, read-only architecture-independent data, ${DATAROOTDIR}
infodir, info documentation, ${DATAROOTDIR}/info
localedir, locale-dependent data, ${DATAROOTDIR}/locale
mandir, man documentation, ${DATAROOTDIR}/man
docdir, documentation root, ${DATAROOTDIR}/doc/${PACKAGE}
htmldir, html documentation, ${DOCDIR}
dvidir, dvi documentation, ${DOCDIR}
pdfdir, pdf documentation, ${DOCDIR}
psdir, ps documentation, ${DOCDIR}
'''.split('\n') if x]

def detect(conf):
      def get_param(varname, default):
            return getattr(Options.options, varname, '') or default

      env = conf.env
      env['EXEC_PREFIX'] = get_param('EXEC_PREFIX', env['PREFIX'])
      env['PACKAGE'] = getattr(Utils.g_module, 'APPNAME', None) or env['PACKAGE']

      complete = False
      iter = 0
      while not complete and iter < len(_options) + 1:
            iter += 1
            complete = True
            for name, help, default in _options:
                  name = name.upper()
                  if not env[name]:
                              env[name] = Utils.subst_vars(get_param(name, default), env)
                        except TypeError:
                              complete = False
      if not complete:
            lst = [name for name, _, _ in _options if not env[name.upper()]]
            raise Utils.WafError('Variable substitution failure %r' % lst)

def set_options(opt):

      inst_dir = opt.add_option_group('Installation directories',
'By default, "waf install" will put the files in\
 "/usr/local/bin", "/usr/local/lib" etc. An installation prefix other\
 than "/usr/local" can be given using "--prefix", for example "--prefix=$HOME"')

      for k in ('--prefix', '--destdir'):
            option = opt.parser.get_option(k)
            if option:

            help = 'installation prefix [Default: ${PREFIX}]',
            default = '',
            dest = 'EXEC_PREFIX')

      dirs_options = opt.add_option_group('Pre-defined installation directories', '')

      for name, help, default in _options:
            option_name = '--' + name
            str_default = default
            str_help = '%s [Default: %s]' % (help, str_default)
            dirs_options.add_option(option_name, help=str_help, default='', dest=name.upper())

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