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 # Minimal scons version
  32
  33 EnsureSConsVersion(2, 4)
  34
  35
  36 #######################################################################
  37 # Configuration options
  38
  39 opts = Variables('config.py')
  40 common.AddOptions(opts)
  41
  42 env = Environment(
  43         options = opts,
  44         tools = ['gallium'],
  45         toolpath = ['#scons'],
  46         ENV = os.environ,
  47 )
  48
  49 # XXX: This creates a many problems as it saves...
  50 #opts.Save('config.py', env)
  51
  52 # Backwards compatability with old target configuration variable
  53 try:
  54     targets = ARGUMENTS['targets']
  55 except KeyError:
  56     pass
  57 else:
  58     targets = targets.split(',')
  59     print('scons: warning: targets option is deprecated; pass the targets on their own such as')
  60     print()
  61     print('  scons %s' % ' '.join(targets))
  62     print()
  63     COMMAND_LINE_TARGETS.append(targets)
  64
  65
  66 Help(opts.GenerateHelpText(env))
  67
  68 #######################################################################
  69 # Environment setup
  70
  71 with open("VERSION") as f:
  72   mesa_version = f.read().strip()
  73 env.Append(CPPDEFINES = [
  74     ('PACKAGE_VERSION', '\\"%s\\"' % mesa_version),
  75     ('PACKAGE_BUGREPORT', '\\"https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa\\"'),
  76 ])
  77
  78 # Includes
  79 env.Prepend(CPPPATH = [
  80         '#/include',
  81 ])
  82 env.Append(CPPPATH = [
  83         '#/src/gallium/include',
  84         '#/src/gallium/auxiliary',
  85         '#/src/gallium/drivers',
  86         '#/src/gallium/winsys',
  87 ])
  88
  89 # for debugging
  90 #print env.Dump()
  91
  92
  93 # Add a check target for running tests
  94 check = env.Alias('check')
  95 env.AlwaysBuild(check)
  96
  97
  98 #######################################################################
  99 # Invoke host SConscripts
 100 #
 101 # For things that are meant to be run on the native host build machine, instead
 102 # of the target machine.
 103 #
 104
 105 # Create host environent
 106 if env['crosscompile'] and not env['embedded']:
 107     host_env = Environment(
 108         options = opts,
 109         # no tool used
 110         tools = [],
 111         toolpath = ['#scons'],
 112         ENV = os.environ,
 113     )
 114
 115     # Override options
 116     host_env['platform'] = common.host_platform
 117     host_env['machine'] = common.host_machine
 118     host_env['toolchain'] = 'default'
 119     host_env['llvm'] = False
 120
 121     host_env.Tool('gallium')
 122
 123     host_env['hostonly'] = True
 124     assert host_env['crosscompile'] == False
 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 = sorted(default_ans.keys())
 162     env.Help('\n')
 163     env.Help('Recognized targets:\n')
 164     for alias in aliases:
 165         env.Help('    %s\n' % alias)