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#######################################################################

# Top-level SConstruct

#

# For example, invoke scons as

#

#   scons build=debug llvm=yes machine=x86

#

# to set configuration variables. Or you can write those options to a file

# named config.py:

#

#   # config.py

#   build='debug'

#   llvm=True

#   machine='x86'

#

# Invoke

#

#   scons -h

#

# to get the full list of options. See scons manpage for more info.

#

import os

import os.path

import sys

import SCons.Util

import common

#######################################################################

# Configuration options

opts = Variables('config.py')

common.AddOptions(opts)

env = Environment(

	options = opts,

	tools = ['gallium'],

	toolpath = ['#scons'],

	ENV = os.environ,

)

# XXX: This creates a many problems as it saves...

#opts.Save('config.py', env)

# Backwards compatability with old target configuration variable

try:

    targets = ARGUMENTS['targets']

except KeyError:

    pass

else:

    targets = targets.split(',')

    print 'scons: warning: targets option is deprecated; pass the targets on their own such as'

    print

    print '  scons %s' % ' '.join(targets)

    print

    COMMAND_LINE_TARGETS.append(targets)

Help(opts.GenerateHelpText(env))

# fail early for a common error on windows

if env['gles']:

    try:

        import libxml2

    except ImportError:

        raise SCons.Errors.UserError, "GLES requires libxml2-python to build"

#######################################################################

# Environment setup

env.Append(CPPDEFINES = [

    ('PACKAGE_VERSION', '\\"9.2.5\\"'),

    ('PACKAGE_BUGREPORT', '\\"https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa\\"'),

])

# Includes

env.Prepend(CPPPATH = [

	'#/include',

])

env.Append(CPPPATH = [

	'#/src/gallium/include',

	'#/src/gallium/auxiliary',

	'#/src/gallium/drivers',

	'#/src/gallium/winsys',

])

if env['msvc']:

    env.Append(CPPPATH = ['#include/c99'])

# for debugging

#print env.Dump()

#######################################################################

# Invoke host SConscripts

#

# For things that are meant to be run on the native host build machine, instead

# of the target machine.

#

# Create host environent

if env['crosscompile'] and not env['embedded']:

    host_env = Environment(

        options = opts,

        # no tool used

        tools = [],

        toolpath = ['#scons'],

        ENV = os.environ,

    )

    # Override options

    host_env['platform'] = common.host_platform

    host_env['machine'] = common.host_machine

    host_env['toolchain'] = 'default'

    host_env['llvm'] = False

    host_env.Tool('gallium')

    host_env['hostonly'] = True

    assert host_env['crosscompile'] == False

    if host_env['msvc']:

        host_env.Append(CPPPATH = ['#include/c99'])

    target_env = env

    env = host_env

    Export('env')

    SConscript(

        'src/SConscript',

        variant_dir = host_env['build_dir'],

        duplicate = 0, # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html

    )

    env = target_env

Export('env')

#######################################################################

# Invoke SConscripts

# TODO: Build several variants at the same time?

# http://www.scons.org/wiki/SimultaneousVariantBuilds

SConscript(

	'src/SConscript',

	variant_dir = env['build_dir'],

	duplicate = 0 # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html

)

########################################################################

# List all aliases

try:

    from SCons.Node.Alias import default_ans

except ImportError:

    pass

else:

    aliases = default_ans.keys()

    aliases.sort()

    env.Help('\n')

    env.Help('Recognized targets:\n')

    for alias in aliases:

        env.Help('    %s\n' % alias)