SConstruct revision 58a3d7dfd94453c25607106835fbbb3a54d42306 
1#######################################################################
2# Top-level SConstruct
3
4import os
5import os.path
6import sys
7
8
9#######################################################################
10# Configuration options
11#
12# For example, invoke scons as 
13#
14#   scons debug=1 dri=0 machine=x86
15#
16# to set configuration variables. Or you can write those options to a file
17# named config.py:
18#
19#   # config.py
20#   debug=1
21#   dri=0
22#   machine='x86'
23# 
24# Invoke
25#
26#   scons -h
27#
28# to get the full list of options. See scons manpage for more info.
29#  
30
31platform_map = {
32	'linux2': 'linux',
33	'win32': 'winddk',
34}
35
36default_platform = platform_map.get(sys.platform, sys.platform)
37
38if default_platform in ('linux', 'freebsd', 'darwin'):
39	default_statetrackers = 'mesa'
40	default_drivers = 'softpipe,failover,i915simple,i965simple'
41	default_winsys = 'xlib'
42elif default_platform in ('winddk',):
43	default_statetrackers = 'none'
44	default_drivers = 'softpipe,i915simple'
45	default_winsys = 'none'
46else:
47	default_drivers = 'all'
48	default_winsys = 'all'
49
50# TODO: auto-detect defaults
51opts = Options('config.py')
52opts.Add(BoolOption('debug', 'build debug version', False))
53opts.Add(EnumOption('machine', 'use machine-specific assembly code', 'x86',
54                     allowed_values=('generic', 'x86', 'x86-64')))
55opts.Add(EnumOption('platform', 'target platform', default_platform,
56                     allowed_values=('linux', 'cell', 'winddk')))
57opts.Add(ListOption('statetrackers', 'state_trackers to build', default_statetrackers,
58                     [
59                     	'mesa', 
60                     ],
61                     ))
62opts.Add(ListOption('drivers', 'pipe drivers to build', default_drivers,
63                     [
64                     	'softpipe', 
65                     	'failover', 
66                     	'i915simple', 
67                     	'i965simple', 
68                     	'cell',
69                     ],
70                     ))
71opts.Add(ListOption('winsys', 'winsys drivers to build', default_winsys,
72                     [
73                     	'xlib', 
74                     	'intel',
75                     ],
76                     ))
77opts.Add(BoolOption('llvm', 'use LLVM', 'no'))
78opts.Add(BoolOption('dri', 'build DRI drivers', 'no'))
79
80env = Environment(
81	options = opts, 
82	ENV = os.environ)
83Help(opts.GenerateHelpText(env))
84
85# for debugging
86#print env.Dump()
87
88# replicate options values in local variables
89debug = env['debug']
90dri = env['dri']
91llvm = env['llvm']
92machine = env['machine']
93platform = env['platform']
94
95# derived options
96x86 = machine == 'x86'
97gcc = platform in ('linux', 'freebsd', 'darwin')
98msvc = platform in ('win32', 'winddk')
99
100Export([
101	'debug', 
102	'x86', 
103	'dri', 
104	'llvm',
105	'platform',
106	'gcc',
107	'msvc',
108])
109
110
111#######################################################################
112# Environment setup
113#
114# TODO: put the compiler specific settings in separate files
115# TODO: auto-detect as much as possible
116
117
118if platform == 'winddk':
119	import ntpath
120	escape = env['ESCAPE']
121	env.Tool('winddk', '.')
122	if 'BASEDIR' in os.environ:
123		WINDDK = os.environ['BASEDIR']
124	else:
125		WINDDK = "C:\\WINDDK\\3790.1830"
126	# NOTE: We need this elaborate construct to get the absolute paths and
127	# forward slashes to msvc unharmed when cross compiling from posix platforms 
128	env.Append(CPPFLAGS = [
129		escape('/I' + ntpath.join(WINDDK, 'inc\\ddk\\wxp')),
130		escape('/I' + ntpath.join(WINDDK, 'inc\\ddk\\wdm\\wxp')),
131		escape('/I' + ntpath.join(WINDDK, 'inc\\crt')),
132	])
133	env.Append(CPPDEFINES = [
134		('i386', '1'),
135	])
136	if debug:
137		env.Append(CPPDEFINES = ['DBG'])
138	
139
140# Optimization flags
141if gcc:
142	if debug:
143		env.Append(CFLAGS = '-O0 -g3')
144		env.Append(CXXFLAGS = '-O0 -g3')
145	else:
146		env.Append(CFLAGS = '-O3 -g3')
147		env.Append(CXXFLAGS = '-O3 -g3')
148
149	env.Append(CFLAGS = '-Wall -Wmissing-prototypes -Wno-long-long -ffast-math -pedantic')
150	env.Append(CXXFLAGS = '-Wall -pedantic')
151	
152	# Be nice to Eclipse
153	env.Append(CFLAGS = '-fmessage-length=0')
154	env.Append(CXXFLAGS = '-fmessage-length=0')
155
156
157# Defines
158if debug:
159	env.Append(CPPDEFINES = ['DEBUG'])
160else:
161	env.Append(CPPDEFINES = ['NDEBUG'])
162
163
164# Includes
165env.Append(CPPPATH = [
166	'#/include',
167	'#/src/gallium/include',
168	'#/src/gallium/auxiliary',
169	'#/src/gallium/drivers',
170])
171
172
173# x86 assembly
174if x86:
175	env.Append(CPPDEFINES = [
176		'USE_X86_ASM', 
177		'USE_MMX_ASM',
178		'USE_3DNOW_ASM',
179		'USE_SSE_ASM',
180	])
181	if gcc:	
182		env.Append(CFLAGS = '-m32')
183		env.Append(CXXFLAGS = '-m32')
184
185
186# Posix
187if platform in ('posix', 'linux', 'freebsd', 'darwin'):
188	env.Append(CPPDEFINES = [
189		'_POSIX_SOURCE',
190		('_POSIX_C_SOURCE', '199309L'), 
191		'_SVID_SOURCE',
192		'_BSD_SOURCE', 
193		'_GNU_SOURCE',
194		
195		'PTHREADS',
196		'HAVE_POSIX_MEMALIGN',
197	])
198	env.Append(CPPPATH = ['/usr/X11R6/include'])
199	env.Append(LIBPATH = ['/usr/X11R6/lib'])
200	env.Append(LIBS = [
201		'm',
202		'pthread',
203		'expat',
204		'dl',
205	])
206
207
208# DRI
209if dri:
210	env.ParseConfig('pkg-config --cflags --libs libdrm')
211	env.Append(CPPDEFINES = [
212		('USE_EXTERNAL_DXTN_LIB', '1'), 
213		'IN_DRI_DRIVER',
214		'GLX_DIRECT_RENDERING',
215		'GLX_INDIRECT_RENDERING',
216	])
217
218# LLVM
219if llvm:
220	# See also http://www.scons.org/wiki/UsingPkgConfig
221	env.ParseConfig('llvm-config --cflags --ldflags --libs')
222	env.Append(CPPDEFINES = ['MESA_LLVM'])
223	env.Append(CXXFLAGS = ['-Wno-long-long'])
224	
225
226# libGL
227if 1:
228	env.Append(LIBS = [
229		'X11',
230		'Xext',
231		'Xxf86vm',
232		'Xdamage',
233		'Xfixes',
234	])
235
236Export('env')
237
238
239#######################################################################
240# Convenience Library Builder
241# based on the stock StaticLibrary and SharedLibrary builders
242
243def createConvenienceLibBuilder(env):
244    """This is a utility function that creates the ConvenienceLibrary
245    Builder in an Environment if it is not there already.
246
247    If it is already there, we return the existing one.
248    """
249
250    try:
251        convenience_lib = env['BUILDERS']['ConvenienceLibrary']
252    except KeyError:
253        action_list = [ Action("$ARCOM", "$ARCOMSTR") ]
254        if env.Detect('ranlib'):
255            ranlib_action = Action("$RANLIBCOM", "$RANLIBCOMSTR")
256            action_list.append(ranlib_action)
257
258        convenience_lib = Builder(action = action_list,
259                                  emitter = '$LIBEMITTER',
260                                  prefix = '$LIBPREFIX',
261                                  suffix = '$LIBSUFFIX',
262                                  src_suffix = '$SHOBJSUFFIX',
263                                  src_builder = 'SharedObject')
264        env['BUILDERS']['ConvenienceLibrary'] = convenience_lib
265        env['BUILDERS']['Library'] = convenience_lib
266
267    return convenience_lib
268
269createConvenienceLibBuilder(env)
270
271
272#######################################################################
273# Invoke SConscripts
274
275# Put build output in a separate dir, which depends on the current configuration
276# See also http://www.scons.org/wiki/AdvancedBuildExample
277build_topdir = 'build'
278build_subdir = platform
279if dri:
280	build_subdir += "-dri"
281if llvm:
282	build_subdir += "-llvm"
283if x86:
284	build_subdir += "-x86"
285if debug:
286	build_subdir += "-debug"
287build_dir = os.path.join(build_topdir, build_subdir)
288
289# TODO: Build several variants at the same time?
290# http://www.scons.org/wiki/SimultaneousVariantBuilds
291
292SConscript(
293	'src/SConscript',
294	build_dir = build_dir,
295	duplicate = 0 # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
296)
297