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     if conf.env.HAVE_PYTHON_H:
  13         conf.check_python_version(version)
  14         return
  15
  16     interpreters = []
  17
  18     if conf.env['EXTRA_PYTHON']:
  19         conf.all_envs['extrapython'] = conf.env.copy()
  20         conf.setenv('extrapython')
  21         conf.env['PYTHON'] = conf.env['EXTRA_PYTHON']
  22         conf.env['IS_EXTRA_PYTHON'] = 'yes'
  23         conf.find_program('python', var='PYTHON', mandatory=True)
  24         conf.check_tool('python')
  25         try:
  26             conf.check_python_version((3, 3, 0))
  27         except Exception:
  28             Logs.warn('extra-python needs to be Python 3.3 or later')
  29             raise
  30         interpreters.append(conf.env['PYTHON'])
  31         conf.setenv('default')
  32
  33     conf.find_program('python', var='PYTHON', mandatory=mandatory)
  34     conf.check_tool('python')
  35     path_python = conf.find_program('python')
  36     conf.env.PYTHON_SPECIFIED = (conf.env.PYTHON != path_python)
  37     conf.check_python_version(version)
  38
  39     interpreters.append(conf.env['PYTHON'])
  40     conf.env.python_interpreters = interpreters
  41
  42
  43 @conf
  44 def SAMBA_CHECK_PYTHON_HEADERS(conf, mandatory=True):
  45     if conf.env["python_headers_checked"] == []:
  46         if conf.env['EXTRA_PYTHON']:
  47             conf.setenv('extrapython')
  48             _check_python_headers(conf, mandatory=True)
  49             conf.setenv('default')
  50
  51         _check_python_headers(conf, mandatory)
  52         conf.env["python_headers_checked"] = "yes"
  53
  54         if conf.env['EXTRA_PYTHON']:
  55             extraversion = conf.all_envs['extrapython']['PYTHON_VERSION']
  56             if extraversion == conf.env['PYTHON_VERSION']:
  57                 raise Utils.WafError("extrapython %s is same as main python %s" % (
  58                     extraversion, conf.env['PYTHON_VERSION']))
  59     else:
  60         conf.msg("python headers", "using cache")
  61
  62     # we don't want PYTHONDIR in config.h, as otherwise changing
  63     # --prefix causes a complete rebuild
  64     del(conf.env.defines['PYTHONDIR'])
  65     del(conf.env.defines['PYTHONARCHDIR'])
  66
  67 def _check_python_headers(conf, mandatory):
  68     conf.check_python_headers(mandatory=mandatory)
  69
  70     if conf.env['PYTHON_VERSION'] > '3':
  71         abi_pattern = os.path.splitext(conf.env['pyext_PATTERN'])[0]
  72         conf.env['PYTHON_SO_ABI_FLAG'] = abi_pattern % ''
  73     else:
  74         conf.env['PYTHON_SO_ABI_FLAG'] = ''
  75
  76
  77 def SAMBA_PYTHON(bld, name,
  78                  source='',
  79                  deps='',
  80                  public_deps='',
  81                  realname=None,
  82                  cflags='',
  83                  includes='',
  84                  init_function_sentinel=None,
  85                  local_include=True,
  86                  vars=None,
  87                  install=True,
  88                  enabled=True):
  89     '''build a python extension for Samba'''
  90
  91     if bld.env['IS_EXTRA_PYTHON']:
  92         name = 'extra-' + name
  93
  94     # when we support static python modules we'll need to gather
  95     # the list from all the SAMBA_PYTHON() targets
  96     if init_function_sentinel is not None:
  97         cflags += '-DSTATIC_LIBPYTHON_MODULES=%s' % init_function_sentinel
  98
  99     source = bld.EXPAND_VARIABLES(source, vars=vars)
 100
 101     if realname is not None:
 102         link_name = 'python_modules/%s' % realname
 103     else:
 104         link_name = None
 105
 106     bld.SAMBA_LIBRARY(name,
 107                       source=source,
 108                       deps=deps,
 109                       public_deps=public_deps,
 110                       includes=includes,
 111                       cflags=cflags,
 112                       local_include=local_include,
 113                       vars=vars,
 114                       realname=realname,
 115                       link_name=link_name,
 116                       pyext=True,
 117                       target_type='PYTHON',
 118                       install_path='${PYTHONARCHDIR}',
 119                       allow_undefined_symbols=True,
 120                       install=install,
 121                       enabled=enabled)
 122
 123 Build.BuildContext.SAMBA_PYTHON = SAMBA_PYTHON
 124
 125
 126 def pyembed_libname(bld, name, extrapython=False):
 127     return name + bld.env['PYTHON_SO_ABI_FLAG']
 128
 129 Build.BuildContext.pyembed_libname = pyembed_libname
 130
 131
 132 def gen_python_environments(bld, extra_env_vars=()):
 133     """Generate all Python environments
 134
 135     To be used in a for loop. Normally, the loop body will be executed once.
 136
 137     When --extra-python is used, the body will additionaly be executed
 138     with the extra-python environment active.
 139     """
 140     yield
 141
 142     if bld.env['EXTRA_PYTHON']:
 143         copied = ('GLOBAL_DEPENDENCIES', 'TARGET_TYPE') + tuple(extra_env_vars)
 144         for name in copied:
 145             bld.all_envs['extrapython'][name] = bld.all_envs['default'][name]
 146         default_env = bld.all_envs['default']
 147         bld.all_envs['default'] = bld.all_envs['extrapython']
 148         yield
 149         bld.all_envs['default'] = default_env
 150
 151 Build.BuildContext.gen_python_environments = gen_python_environments