SConstruct

   1 #######################################################################
   2 # Top-level SConstruct
   3 #
   4 # For example, invoke scons as
   5 #
   6 #   scons build=debug llvm=yes machine=x86
   7 #
   8 # to set configuration variables. Or you can write those options to a file
   9 # named config.py:
  10 #
  11 #   # config.py
  12 #   build='debug'
  13 #   llvm=True
  14 #   machine='x86'
  15 #
  16 # Invoke
  17 #
  18 #   scons -h
  19 #
  20 # to get the full list of options. See scons manpage for more info.
  21 #
  22
  23 import os
  24 import os.path
  25 import sys
  26 import SCons.Util
  27
  28 import common
  29
  30 #######################################################################
  31 # Configuration options
  32
  33 opts = Variables('config.py')
  34 common.AddOptions(opts)
  35
  36 env = Environment(
  37         options = opts,
  38         tools = ['gallium'],
  39         toolpath = ['#scons'],
  40         ENV = os.environ,
  41 )
  42
  43 # XXX: This creates a many problems as it saves...
  44 #opts.Save('config.py', env)
  45
  46 # Backwards compatability with old target configuration variable
  47 try:
  48     targets = ARGUMENTS['targets']
  49 except KeyError:
  50     pass
  51 else:
  52     targets = targets.split(',')
  53     print 'scons: warning: targets option is deprecated; pass the targets on their own such as'
  54     print
  55     print '  scons %s' % ' '.join(targets)
  56     print
  57     COMMAND_LINE_TARGETS.append(targets)
  58
  59
  60 Help(opts.GenerateHelpText(env))
  61
  62 # fail early for a common error on windows
  63 if env['gles']:
  64     try:
  65         import libxml2
  66     except ImportError:
  67         raise SCons.Errors.UserError, "GLES requires libxml2-python to build"
  68
  69 #######################################################################
  70 # Environment setup
  71
  72 env.Append(CPPDEFINES = [
  73     ('PACKAGE_VERSION', '\\"9.2.0-devel\\"'),
  74     ('PACKAGE_BUGREPORT', '\\"https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa\\"'),
  75 ])
  76
  77 # Includes
  78 env.Prepend(CPPPATH = [
  79         '#/include',
  80 ])
  81 env.Append(CPPPATH = [
  82         '#/src/gallium/include',
  83         '#/src/gallium/auxiliary',
  84         '#/src/gallium/drivers',
  85         '#/src/gallium/winsys',
  86 ])
  87
  88 if env['msvc']:
  89     env.Append(CPPPATH = ['#include/c99'])
  90
  91 # for debugging
  92 #print env.Dump()
  93
  94
  95 #######################################################################
  96 # Invoke host SConscripts
  97 #
  98 # For things that are meant to be run on the native host build machine, instead
  99 # of the target machine.
 100 #
 101
 102 # Create host environent
 103 if env['crosscompile'] and not env['embedded']:
 104     host_env = Environment(
 105         options = opts,
 106         # no tool used
 107         tools = [],
 108         toolpath = ['#scons'],
 109         ENV = os.environ,
 110     )
 111
 112     # Override options
 113     host_env['platform'] = common.host_platform
 114     host_env['machine'] = common.host_machine
 115     host_env['toolchain'] = 'default'
 116     host_env['llvm'] = False
 117
 118     host_env.Tool('gallium')
 119
 120     host_env['hostonly'] = True
 121     assert host_env['crosscompile'] == False
 122
 123     if host_env['msvc']:
 124         host_env.Append(CPPPATH = ['#include/c99'])
 125
 126     target_env = env
 127     env = host_env
 128     Export('env')
 129
 130     SConscript(
 131         'src/SConscript',
 132         variant_dir = host_env['build_dir'],
 133         duplicate = 0, # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
 134     )
 135
 136     env = target_env
 137
 138 Export('env')
 139
 140 #######################################################################
 141 # Invoke SConscripts
 142
 143 # TODO: Build several variants at the same time?
 144 # http://www.scons.org/wiki/SimultaneousVariantBuilds
 145
 146 SConscript(
 147         'src/SConscript',
 148         variant_dir = env['build_dir'],
 149         duplicate = 0 # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
 150 )
 151
 152
 153 ########################################################################
 154 # List all aliases
 155
 156 try:
 157     from SCons.Node.Alias import default_ans
 158 except ImportError:
 159     pass
 160 else:
 161     aliases = default_ans.keys()
 162     aliases.sort()
 163     env.Help('\n')
 164     env.Help('Recognized targets:\n')
 165     for alias in aliases:
 166         env.Help('    %s\n' % alias)