drm-shim: Let the driver choose to overwrite the first render node.
[mesa.git] / 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 #######################################################################
72 # Print a deprecation warning for using scons on non-windows
73
74 if common.host_platform != 'windows' and env['platform'] != 'windows':
75 if env['force_scons']:
76 print("WARNING: Scons is deprecated for non-windows platforms (including cygwin) "
77 "please use meson instead.", file=sys.stderr)
78 else:
79 print("ERROR: Scons is deprecated for non-windows platforms (including cygwin) "
80 "please use meson instead. If you really need to use scons you "
81 "can add `force_scons=1` to the scons command line.", file=sys.stderr)
82 sys.exit(1)
83 else:
84 print("WARNING: Scons support is in the process of being deprecated on "
85 "on windows platforms (including mingw). If you haven't already "
86 "please try using meson for windows builds. Be sure to report any "
87 "issues you run into", file=sys.stderr)
88
89
90 #######################################################################
91 # Environment setup
92
93 with open("VERSION") as f:
94 mesa_version = f.read().strip()
95 env.Append(CPPDEFINES = [
96 ('PACKAGE_VERSION', '\\"%s\\"' % mesa_version),
97 ('PACKAGE_BUGREPORT', '\\"https://gitlab.freedesktop.org/mesa/mesa/issues\\"'),
98 ])
99
100 # Includes
101 env.Prepend(CPPPATH = [
102 '#/include',
103 ])
104 env.Append(CPPPATH = [
105 '#/src/gallium/include',
106 '#/src/gallium/auxiliary',
107 '#/src/gallium/drivers',
108 '#/src/gallium/winsys',
109 ])
110
111 # for debugging
112 #print env.Dump()
113
114
115 # Add a check target for running tests
116 check = env.Alias('check')
117 env.AlwaysBuild(check)
118
119
120 #######################################################################
121 # Invoke host SConscripts
122 #
123 # For things that are meant to be run on the native host build machine, instead
124 # of the target machine.
125 #
126
127 # Create host environent
128 if env['crosscompile'] and not env['embedded']:
129 host_env = Environment(
130 options = opts,
131 # no tool used
132 tools = [],
133 toolpath = ['#scons'],
134 ENV = os.environ,
135 )
136
137 # Override options
138 host_env['platform'] = common.host_platform
139 host_env['machine'] = common.host_machine
140 host_env['toolchain'] = 'default'
141 host_env['llvm'] = False
142
143 host_env.Tool('gallium')
144
145 host_env['hostonly'] = True
146 assert host_env['crosscompile'] == False
147
148 target_env = env
149 env = host_env
150 Export('env')
151
152 SConscript(
153 'src/SConscript',
154 variant_dir = host_env['build_dir'],
155 duplicate = 0, # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
156 )
157
158 env = target_env
159
160 Export('env')
161
162 #######################################################################
163 # Invoke SConscripts
164
165 # TODO: Build several variants at the same time?
166 # http://www.scons.org/wiki/SimultaneousVariantBuilds
167
168 SConscript(
169 'src/SConscript',
170 variant_dir = env['build_dir'],
171 duplicate = 0 # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
172 )
173
174
175 ########################################################################
176 # List all aliases
177
178 try:
179 from SCons.Node.Alias import default_ans
180 except ImportError:
181 pass
182 else:
183 aliases = sorted(default_ans.keys())
184 env.Help('\n')
185 env.Help('Recognized targets:\n')
186 for alias in aliases:
187 env.Help(' %s\n' % alias)