buildtools/wafsamba/samba_python.py

   1 # waf build tool for building IDL files with pidl
   2
   3 import Build
   4 from samba_utils import *
   5 from samba_autoconf import *
   6
   7 from Configure import conf
   8
   9 @conf
  10 def SAMBA_CHECK_PYTHON(conf, mandatory=True, version=(2,4,2)):
  11     # enable tool to build python extensions
  12     interpreters = []
  13
  14     if conf.env['EXTRA_PYTHON']:
  15         conf.all_envs['extrapython'] = conf.env.copy()
  16         conf.setenv('extrapython')
  17         conf.env['PYTHON'] = conf.env['EXTRA_PYTHON']
  18         conf.env['IS_EXTRA_PYTHON'] = 'yes'
  19         conf.find_program('python', var='PYTHON', mandatory=True)
  20         conf.check_tool('python')
  21         try:
  22             conf.check_python_version((3, 3, 0))
  23         except Exception:
  24             warn('extra-python needs to be Python 3.3 or later')
  25             raise
  26         interpreters.append(conf.env['PYTHON'])
  27         conf.setenv('default')
  28
  29     conf.find_program('python', var='PYTHON', mandatory=mandatory)
  30     conf.check_tool('python')
  31     path_python = conf.find_program('python')
  32     conf.env.PYTHON_SPECIFIED = (conf.env.PYTHON != path_python)
  33     conf.check_python_version(version)
  34
  35     interpreters.append(conf.env['PYTHON'])
  36     conf.env.python_interpreters = interpreters
  37
  38
  39 @conf
  40 def SAMBA_CHECK_PYTHON_HEADERS(conf, mandatory=True):
  41     if conf.env["python_headers_checked"] == []:
  42         if conf.env['EXTRA_PYTHON']:
  43             conf.setenv('extrapython')
  44             _check_python_headers(conf, mandatory=True)
  45             conf.setenv('default')
  46
  47         _check_python_headers(conf, mandatory)
  48         conf.env["python_headers_checked"] = "yes"
  49
  50         if conf.env['EXTRA_PYTHON']:
  51             extraversion = conf.all_envs['extrapython']['PYTHON_VERSION']
  52             if extraversion == conf.env['PYTHON_VERSION']:
  53                 raise Utils.WafError("extrapython %s is same as main python %s" % (
  54                     extraversion, conf.env['PYTHON_VERSION']))
  55     else:
  56         conf.msg("python headers", "using cache")
  57
  58     # we don't want PYTHONDIR in config.h, as otherwise changing
  59     # --prefix causes a complete rebuild
  60     del(conf.env.defines['PYTHONDIR'])
  61     del(conf.env.defines['PYTHONARCHDIR'])
  62
  63 def _check_python_headers(conf, mandatory):
  64     conf.check_python_headers(mandatory=mandatory)
  65
  66     if conf.env['PYTHON_VERSION'] > '3':
  67         abi_pattern = os.path.splitext(conf.env['pyext_PATTERN'])[0]
  68         conf.env['PYTHON_SO_ABI_FLAG'] = abi_pattern % ''
  69     else:
  70         conf.env['PYTHON_SO_ABI_FLAG'] = ''
  71
  72
  73 def SAMBA_PYTHON(bld, name,
  74                  source='',
  75                  deps='',
  76                  public_deps='',
  77                  realname=None,
  78                  cflags='',
  79                  includes='',
  80                  init_function_sentinel=None,
  81                  local_include=True,
  82                  vars=None,
  83                  install=True,
  84                  enabled=True):
  85     '''build a python extension for Samba'''
  86
  87     if bld.env['IS_EXTRA_PYTHON']:
  88         name = 'extra-' + name
  89
  90     # when we support static python modules we'll need to gather
  91     # the list from all the SAMBA_PYTHON() targets
  92     if init_function_sentinel is not None:
  93         cflags += '-DSTATIC_LIBPYTHON_MODULES=%s' % init_function_sentinel
  94
  95     source = bld.EXPAND_VARIABLES(source, vars=vars)
  96
  97     if realname is not None:
  98         link_name = 'python_modules/%s' % realname
  99     else:
 100         link_name = None
 101
 102     bld.SAMBA_LIBRARY(name,
 103                       source=source,
 104                       deps=deps,
 105                       public_deps=public_deps,
 106                       includes=includes,
 107                       cflags=cflags,
 108                       local_include=local_include,
 109                       vars=vars,
 110                       realname=realname,
 111                       link_name=link_name,
 112                       pyext=True,
 113                       target_type='PYTHON',
 114                       install_path='${PYTHONARCHDIR}',
 115                       allow_undefined_symbols=True,
 116                       install=install,
 117                       enabled=enabled)
 118
 119 Build.BuildContext.SAMBA_PYTHON = SAMBA_PYTHON
 120
 121
 122 def pyembed_libname(bld, name, extrapython=False):
 123     return name + bld.env['PYTHON_SO_ABI_FLAG']
 124
 125 Build.BuildContext.pyembed_libname = pyembed_libname
 126
 127
 128 def gen_python_environments(bld, extra_env_vars=()):
 129     """Generate all Python environments
 130
 131     To be used in a for loop. Normally, the loop body will be executed once.
 132
 133     When --extra-python is used, the body will additionaly be executed
 134     with the extra-python environment active.
 135     """
 136     yield
 137
 138     if bld.env['EXTRA_PYTHON']:
 139         copied = ('GLOBAL_DEPENDENCIES', 'TARGET_TYPE') + tuple(extra_env_vars)
 140         for name in copied:
 141             bld.all_envs['extrapython'][name] = bld.all_envs['default'][name]
 142         default_env = bld.all_envs['default']
 143         bld.all_envs['default'] = bld.all_envs['extrapython']
 144         yield
 145         bld.all_envs['default'] = default_env
 146
 147 Build.BuildContext.gen_python_environments = gen_python_environments