common.py

   1 #######################################################################
   2 # Common SCons code
   3
   4 import os
   5 import os.path
   6 import sys
   7 import platform as _platform
   8
   9
  10 #######################################################################
  11 # Defaults
  12
  13 _platform_map = {
  14         'linux2': 'linux',
  15         'win32': 'winddk',
  16 }
  17
  18 default_platform = sys.platform
  19 default_platform = _platform_map.get(default_platform, default_platform)
  20
  21 _machine_map = {
  22         'x86': 'x86',
  23         'i386': 'x86',
  24         'i486': 'x86',
  25         'i586': 'x86',
  26         'i686': 'x86',
  27         'x86_64': 'x86_64',
  28 }
  29 if 'PROCESSOR_ARCHITECTURE' in os.environ:
  30         default_machine = os.environ['PROCESSOR_ARCHITECTURE']
  31 else:
  32         default_machine = _platform.machine()
  33 default_machine = _machine_map.get(default_machine, 'generic')
  34
  35 if default_platform in ('linux', 'freebsd', 'darwin'):
  36         default_dri = 'yes'
  37 elif default_platform in ('winddk',):
  38         default_dri = 'no'
  39 else:
  40         default_dri = 'no'
  41
  42
  43 #######################################################################
  44 # Common options
  45
  46 def Options():
  47         from SCons.Options import Options
  48         from SCons.Options.BoolOption import BoolOption
  49         from SCons.Options.EnumOption import EnumOption
  50         opts = Options('config.py')
  51         opts.Add(BoolOption('debug', 'build debug version', 'no'))
  52         opts.Add(EnumOption('machine', 'use machine-specific assembly code', default_machine,
  53                                                                                          allowed_values=('generic', 'x86', 'x86_64')))
  54         opts.Add(EnumOption('platform', 'target platform', default_platform,
  55                                                                                          allowed_values=('linux', 'cell', 'winddk')))
  56         opts.Add(BoolOption('llvm', 'use LLVM', 'no'))
  57         opts.Add(BoolOption('dri', 'build DRI drivers', default_dri))
  58         return opts
  59
  60
  61 #######################################################################
  62 # Convenience Library Builder
  63 # based on the stock StaticLibrary and SharedLibrary builders
  64
  65 import SCons.Action
  66 import SCons.Builder
  67
  68 def createConvenienceLibBuilder(env):
  69     """This is a utility function that creates the ConvenienceLibrary
  70     Builder in an Environment if it is not there already.
  71
  72     If it is already there, we return the existing one.
  73     """
  74
  75     try:
  76         convenience_lib = env['BUILDERS']['ConvenienceLibrary']
  77     except KeyError:
  78         action_list = [ SCons.Action.Action("$ARCOM", "$ARCOMSTR") ]
  79         if env.Detect('ranlib'):
  80             ranlib_action = SCons.Action.Action("$RANLIBCOM", "$RANLIBCOMSTR")
  81             action_list.append(ranlib_action)
  82
  83         convenience_lib = SCons.Builder.Builder(action = action_list,
  84                                   emitter = '$LIBEMITTER',
  85                                   prefix = '$LIBPREFIX',
  86                                   suffix = '$LIBSUFFIX',
  87                                   src_suffix = '$SHOBJSUFFIX',
  88                                   src_builder = 'SharedObject')
  89         env['BUILDERS']['ConvenienceLibrary'] = convenience_lib
  90         env['BUILDERS']['Library'] = convenience_lib
  91
  92     return convenience_lib
  93
  94
  95 #######################################################################
  96 # Build
  97
  98 def make_build_dir(env):
  99         # Put build output in a separate dir, which depends on the current configuration
 100         # See also http://www.scons.org/wiki/AdvancedBuildExample
 101         build_topdir = 'build'
 102         build_subdir = env['platform']
 103         if env['dri']:
 104                 build_subdir += "-dri"
 105         if env['llvm']:
 106                 build_subdir += "-llvm"
 107         if env['machine'] != 'generic':
 108                 build_subdir += '-' + env['machine']
 109         if env['debug']:
 110                 build_subdir += "-debug"
 111         build_dir = os.path.join(build_topdir, build_subdir)
 112         # Place the .sconsign file on the builddir too, to avoid issues with different scons
 113         # versions building the same source file
 114         env.SConsignFile(os.path.join(build_dir, '.sconsign'))
 115         return build_dir
 116