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 from __future__ import print_function
  24 import os
  25 import os.path
  26 import sys
  27 import SCons.Util
  28
  29 import common
  30
  31 #######################################################################
  32 # Minimal scons version
  33
  34 EnsureSConsVersion(2, 4)
  35 EnsurePythonVersion(2, 7)
  36
  37
  38 #######################################################################
  39 # Configuration options
  40
  41 opts = Variables('config.py')
  42 common.AddOptions(opts)
  43
  44 env = Environment(
  45         options = opts,
  46         tools = ['gallium'],
  47         toolpath = ['#scons'],
  48         ENV = os.environ,
  49 )
  50
  51 # XXX: This creates a many problems as it saves...
  52 #opts.Save('config.py', env)
  53
  54 # Backwards compatability with old target configuration variable
  55 try:
  56     targets = ARGUMENTS['targets']
  57 except KeyError:
  58     pass
  59 else:
  60     targets = targets.split(',')
  61     print('scons: warning: targets option is deprecated; pass the targets on their own such as')
  62     print()
  63     print('  scons %s' % ' '.join(targets))
  64     print()
  65     COMMAND_LINE_TARGETS.append(targets)
  66
  67
  68 Help(opts.GenerateHelpText(env))
  69
  70 #######################################################################
  71 # Environment setup
  72
  73 with open("VERSION") as f:
  74   mesa_version = f.read().strip()
  75 env.Append(CPPDEFINES = [
  76     ('PACKAGE_VERSION', '\\"%s\\"' % mesa_version),
  77     ('PACKAGE_BUGREPORT', '\\"https://gitlab.freedesktop.org/mesa/mesa/issues\\"'),
  78 ])
  79
  80 # Includes
  81 env.Prepend(CPPPATH = [
  82         '#/include',
  83 ])
  84 env.Append(CPPPATH = [
  85         '#/src/gallium/include',
  86         '#/src/gallium/auxiliary',
  87         '#/src/gallium/drivers',
  88         '#/src/gallium/winsys',
  89 ])
  90
  91 # for debugging
  92 #print env.Dump()
  93
  94
  95 # Add a check target for running tests
  96 check = env.Alias('check')
  97 env.AlwaysBuild(check)
  98
  99
 100 #######################################################################
 101 # Invoke host SConscripts
 102 #
 103 # For things that are meant to be run on the native host build machine, instead
 104 # of the target machine.
 105 #
 106
 107 # Create host environent
 108 if env['crosscompile'] and not env['embedded']:
 109     host_env = Environment(
 110         options = opts,
 111         # no tool used
 112         tools = [],
 113         toolpath = ['#scons'],
 114         ENV = os.environ,
 115     )
 116
 117     # Override options
 118     host_env['platform'] = common.host_platform
 119     host_env['machine'] = common.host_machine
 120     host_env['toolchain'] = 'default'
 121     host_env['llvm'] = False
 122
 123     host_env.Tool('gallium')
 124
 125     host_env['hostonly'] = True
 126     assert host_env['crosscompile'] == False
 127
 128     target_env = env
 129     env = host_env
 130     Export('env')
 131
 132     SConscript(
 133         'src/SConscript',
 134         variant_dir = host_env['build_dir'],
 135         duplicate = 0, # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
 136     )
 137
 138     env = target_env
 139
 140 Export('env')
 141
 142 #######################################################################
 143 # Invoke SConscripts
 144
 145 # TODO: Build several variants at the same time?
 146 # http://www.scons.org/wiki/SimultaneousVariantBuilds
 147
 148 SConscript(
 149         'src/SConscript',
 150         variant_dir = env['build_dir'],
 151         duplicate = 0 # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
 152 )
 153
 154
 155 ########################################################################
 156 # List all aliases
 157
 158 try:
 159     from SCons.Node.Alias import default_ans
 160 except ImportError:
 161     pass
 162 else:
 163     aliases = sorted(default_ans.keys())
 164     env.Help('\n')
 165     env.Help('Recognized targets:\n')
 166     for alias in aliases:
 167         env.Help('    %s\n' % alias)