pidl/wscript

   1 #!/usr/bin/env python
   2
   3 from waflib import Logs, Errors
   4
   5 # This function checks if a perl module is installed on the system.
   6 def check_system_perl_module(conf, module, version=None):
   7     module_check = module
   8
   9     # Create module string with version
  10     if version:
  11         module_check = module + ' ' + str(version)
  12
  13     # Check for system perl module
  14     if conf.check_perl_module(module_check) is None:
  15         return False
  16
  17     return True
  18
  19 def options(opt):
  20     return
  21
  22 def configure(conf):
  23     # Check if perl(Parse::Yapp::Driver) is available.
  24     if not check_system_perl_module(conf,
  25                                     "Parse::Yapp::Driver",
  26                                     1.05):
  27         raise Errors.WafError('perl module "Parse::Yapp::Driver" not found')
  28
  29     # yapp is used for building the parser
  30     if not conf.find_program('yapp', var='YAPP'):
  31         raise Errors.WafError('yapp not found')
  32
  33 def build(bld):
  34
  35     # we want to prefer the git version of the parsers if we can.
  36     # Only if the source has changed do we want to re-run yapp
  37     # But we force the developer to use the pidl standalone build
  38     # to regenerate the files.
  39     # TODO: only warn in developer mode and if 'git diff HEAD'
  40     #       shows a difference
  41     warn_about_grammar_changes = ('PIDL_BUILD_WARNINGS' in bld.env and (
  42         bld.IS_NEWER('idl.yp', 'lib/Parse/Pidl/IDL.pm') or
  43         bld.IS_NEWER('expr.yp', 'lib/Parse/Pidl/Expr.pm')))
  44
  45     if warn_about_grammar_changes:
  46         Logs.warn('''
  47 Pidl grammar files have changed. Please use the pidl standalone build
  48 to regenerate them with yapp.
  49
  50 $ cd ../pidl
  51 $ perl Makefile.PL
  52 $ make lib/Parse/Pidl/IDL.pm lib/Parse/Pidl/Expr.pm
  53 $ git add lib/Parse/Pidl/IDL.pm lib/Parse/Pidl/Expr.pm
  54 $ git commit
  55 $ cd -
  56
  57 If you're 100% sure you haven't changed idl.yp and expr.yp
  58 try this to avoid this message:
  59
  60 $ touch ../pidl/lib/Parse/Pidl/IDL.pm ../pidl/lib/Parse/Pidl/Expr.pm
  61 ''')