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 #######################################################################
  63 # Environment setup
  64
  65 with open("VERSION") as f:
  66   mesa_version = f.read().strip()
  67 env.Append(CPPDEFINES = [
  68     ('PACKAGE_VERSION', '\\"%s\\"' % mesa_version),
  69     ('PACKAGE_BUGREPORT', '\\"https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa\\"'),
  70 ])
  71
  72 # Includes
  73 env.Prepend(CPPPATH = [
  74         '#/include',
  75 ])
  76 env.Append(CPPPATH = [
  77         '#/src/gallium/include',
  78         '#/src/gallium/auxiliary',
  79         '#/src/gallium/drivers',
  80         '#/src/gallium/winsys',
  81 ])
  82
  83 # for debugging
  84 #print env.Dump()
  85
  86
  87 # Add a check target for running tests
  88 check = env.Alias('check')
  89 env.AlwaysBuild(check)
  90
  91
  92 #######################################################################
  93 # Invoke host SConscripts
  94 #
  95 # For things that are meant to be run on the native host build machine, instead
  96 # of the target machine.
  97 #
  98
  99 # Create host environent
 100 if env['crosscompile'] and not env['embedded']:
 101     host_env = Environment(
 102         options = opts,
 103         # no tool used
 104         tools = [],
 105         toolpath = ['#scons'],
 106         ENV = os.environ,
 107     )
 108
 109     # Override options
 110     host_env['platform'] = common.host_platform
 111     host_env['machine'] = common.host_machine
 112     host_env['toolchain'] = 'default'
 113     host_env['llvm'] = False
 114
 115     host_env.Tool('gallium')
 116
 117     host_env['hostonly'] = True
 118     assert host_env['crosscompile'] == False
 119
 120     target_env = env
 121     env = host_env
 122     Export('env')
 123
 124     SConscript(
 125         'src/SConscript',
 126         variant_dir = host_env['build_dir'],
 127         duplicate = 0, # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
 128     )
 129
 130     env = target_env
 131
 132 Export('env')
 133
 134 #######################################################################
 135 # Invoke SConscripts
 136
 137 # TODO: Build several variants at the same time?
 138 # http://www.scons.org/wiki/SimultaneousVariantBuilds
 139
 140 SConscript(
 141         'src/SConscript',
 142         variant_dir = env['build_dir'],
 143         duplicate = 0 # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
 144 )
 145
 146
 147 ########################################################################
 148 # List all aliases
 149
 150 try:
 151     from SCons.Node.Alias import default_ans
 152 except ImportError:
 153     pass
 154 else:
 155     aliases = sorted(default_ans.keys())
 156     env.Help('\n')
 157     env.Help('Recognized targets:\n')
 158     for alias in aliases:
 159         env.Help('    %s\n' % alias)