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
23import os
24import os.path
25import sys
26import SCons.Util
27
28import common
29
30#######################################################################
31# Minimal scons version
32
33EnsureSConsVersion(2, 4)
34EnsurePythonVersion(2, 7)
35
36
37#######################################################################
38# Configuration options
39
40opts = Variables('config.py')
41common.AddOptions(opts)
42
43env = 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
54try:
55    targets = ARGUMENTS['targets']
56except KeyError:
57    pass
58else:
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
67Help(opts.GenerateHelpText(env))
68
69#######################################################################
70# Environment setup
71
72with open("VERSION") as f:
73  mesa_version = f.read().strip()
74env.Append(CPPDEFINES = [
75    ('PACKAGE_VERSION', '\\"%s\\"' % mesa_version),
76    ('PACKAGE_BUGREPORT', '\\"https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa\\"'),
77])
78
79# Includes
80env.Prepend(CPPPATH = [
81	'#/include',
82])
83env.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
95check = env.Alias('check')
96env.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
107if 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
139Export('env')
140
141#######################################################################
142# Invoke SConscripts
143
144# TODO: Build several variants at the same time?
145# http://www.scons.org/wiki/SimultaneousVariantBuilds
146
147SConscript(
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
157try:
158    from SCons.Node.Alias import default_ans
159except ImportError:
160    pass
161else:
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)
167