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 EnsurePythonVersion(2, 7)
  35
  36
  37 #######################################################################
  38 # Configuration options
  39
  40 opts = Variables('config.py')
  41 common.AddOptions(opts)
  42
  43 env = Environment(
  44         options = opts,
  45         tools = ['gallium'],
  46         toolpath = ['#scons'],
  47         ENV = os.environ,
  48 )
  49
  50 # XXX: This creates a many problems as it saves...
  51 #opts.Save('config.py', env)
  52
  53 # Backwards compatability with old target configuration variable
  54 try:
  55     targets = ARGUMENTS['targets']
  56 except KeyError:
  57     pass
  58 else:
  59     targets = targets.split(',')
  60     print('scons: warning: targets option is deprecated; pass the targets on their own such as')
  61     print()
  62     print('  scons %s' % ' '.join(targets))
  63     print()
  64     COMMAND_LINE_TARGETS.append(targets)
  65
  66
  67 Help(opts.GenerateHelpText(env))
  68
  69 #######################################################################
  70 # Environment setup
  71
  72 with open("VERSION") as f:
  73   mesa_version = f.read().strip()
  74 env.Append(CPPDEFINES = [
  75     ('PACKAGE_VERSION', '\\"%s\\"' % mesa_version),
  76     ('PACKAGE_BUGREPORT', '\\"https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa\\"'),
  77 ])
  78
  79 # Includes
  80 env.Prepend(CPPPATH = [
  81         '#/include',
  82 ])
  83 env.Append(CPPPATH = [
  84         '#/src/gallium/include',
  85         '#/src/gallium/auxiliary',
  86         '#/src/gallium/drivers',
  87         '#/src/gallium/winsys',
  88 ])
  89
  90 # for debugging
  91 #print env.Dump()
  92
  93
  94 # Add a check target for running tests
  95 check = env.Alias('check')
  96 env.AlwaysBuild(check)
  97
  98
  99 #######################################################################
 100 # Invoke host SConscripts
 101 #
 102 # For things that are meant to be run on the native host build machine, instead
 103 # of the target machine.
 104 #
 105
 106 # Create host environent
 107 if env['crosscompile'] and not env['embedded']:
 108     host_env = Environment(
 109         options = opts,
 110         # no tool used
 111         tools = [],
 112         toolpath = ['#scons'],
 113         ENV = os.environ,
 114     )
 115
 116     # Override options
 117     host_env['platform'] = common.host_platform
 118     host_env['machine'] = common.host_machine
 119     host_env['toolchain'] = 'default'
 120     host_env['llvm'] = False
 121
 122     host_env.Tool('gallium')
 123
 124     host_env['hostonly'] = True
 125     assert host_env['crosscompile'] == False
 126
 127     target_env = env
 128     env = host_env
 129     Export('env')
 130
 131     SConscript(
 132         'src/SConscript',
 133         variant_dir = host_env['build_dir'],
 134         duplicate = 0, # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
 135     )
 136
 137     env = target_env
 138
 139 Export('env')
 140
 141 #######################################################################
 142 # Invoke SConscripts
 143
 144 # TODO: Build several variants at the same time?
 145 # http://www.scons.org/wiki/SimultaneousVariantBuilds
 146
 147 SConscript(
 148         'src/SConscript',
 149         variant_dir = env['build_dir'],
 150         duplicate = 0 # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
 151 )
 152
 153
 154 ########################################################################
 155 # List all aliases
 156
 157 try:
 158     from SCons.Node.Alias import default_ans
 159 except ImportError:
 160     pass
 161 else:
 162     aliases = sorted(default_ans.keys())
 163     env.Help('\n')
 164     env.Help('Recognized targets:\n')
 165     for alias in aliases:
 166         env.Help('    %s\n' % alias)