SConstruct

   1 #######################################################################
   2 # Top-level SConstruct
   3
   4 import os
   5 import os.path
   6 import 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
  31 platform_map = {
  32         'linux2': 'linux',
  33         'win32': 'winddk',
  34 }
  35
  36 platform = platform_map.get(sys.platform, sys.platform)
  37
  38 # TODO: auto-detect defaults
  39 opts = Options('config.py')
  40 opts.Add(BoolOption('debug', 'build debug version', False))
  41 opts.Add(BoolOption('dri', 'build dri drivers', False))
  42 opts.Add(BoolOption('llvm', 'use llvm', False))
  43 opts.Add(EnumOption('machine', 'use machine-specific assembly code', 'x86',
  44                      allowed_values=('generic', 'x86', 'x86-64')))
  45 opts.Add(EnumOption('platform', 'target platform', platform,
  46                      allowed_values=('linux', 'cell', 'winddk')))
  47
  48 env = Environment(
  49         options = opts,
  50         ENV = os.environ)
  51 Help(opts.GenerateHelpText(env))
  52
  53 # for debugging
  54 #print env.Dump()
  55
  56 # replicate options values in local variables
  57 debug = env['debug']
  58 dri = env['dri']
  59 llvm = env['llvm']
  60 machine = env['machine']
  61 platform = env['platform']
  62
  63 # derived options
  64 x86 = machine == 'x86'
  65 gcc = platform in ('linux', 'freebsd', 'darwin')
  66 msvc = platform in ('win32', 'winddk')
  67
  68 Export([
  69         'debug',
  70         'x86',
  71         'dri',
  72         'llvm',
  73         'platform',
  74         'gcc',
  75         'msvc',
  76 ])
  77
  78
  79 #######################################################################
  80 # Environment setup
  81 #
  82 # TODO: put the compiler specific settings in separate files
  83 # TODO: auto-detect as much as possible
  84
  85
  86 if platform == 'winddk':
  87         import ntpath
  88         escape = env['ESCAPE']
  89         env.Tool('msvc')
  90         if 'BASEDIR' in os.environ:
  91                 WINDDK = os.environ['BASEDIR']
  92         else:
  93                 WINDDK = "C:\\WINDDK\\3790.1830"
  94         # NOTE: We need this elaborate construct to get the absolute paths and
  95         # forward slashes to msvc unharmed when cross compiling from posix platforms
  96         env.Append(CPPFLAGS = [
  97                 escape('/I' + ntpath.join(WINDDK, 'inc\\ddk\\wxp')),
  98                 escape('/I' + ntpath.join(WINDDK, 'inc\\ddk\\wdm\\wxp')),
  99                 escape('/I' + ntpath.join(WINDDK, 'inc\\crt')),
 100         ])
 101         env.Append(CPPDEFINES = [
 102                 ('i386', '1'),
 103         ])
 104         if debug:
 105                 env.Append(CPPDEFINES = ['DBG'])
 106
 107
 108 # Optimization flags
 109 if gcc:
 110         if debug:
 111                 env.Append(CFLAGS = '-O0 -g3')
 112                 env.Append(CXXFLAGS = '-O0 -g3')
 113         else:
 114                 env.Append(CFLAGS = '-O3 -g3')
 115                 env.Append(CXXFLAGS = '-O3 -g3')
 116
 117         env.Append(CFLAGS = '-Wall -Wmissing-prototypes -std=c99 -ffast-math -pedantic')
 118         env.Append(CXXFLAGS = '-Wall -pedantic')
 119
 120         # Be nice to Eclipse
 121         env.Append(CFLAGS = '-fmessage-length=0')
 122         env.Append(CXXFLAGS = '-fmessage-length=0')
 123
 124
 125 # Defines
 126 if debug:
 127         env.Append(CPPDEFINES = ['DEBUG'])
 128 else:
 129         env.Append(CPPDEFINES = ['NDEBUG'])
 130
 131
 132 # Includes
 133 env.Append(CPPPATH = [
 134         '#/include',
 135         '#/src/gallium/include',
 136         '#/src/gallium/auxiliary',
 137         '#/src/gallium/drivers',
 138 ])
 139
 140
 141 # x86 assembly
 142 if x86:
 143         env.Append(CPPDEFINES = [
 144                 'USE_X86_ASM',
 145                 'USE_MMX_ASM',
 146                 'USE_3DNOW_ASM',
 147                 'USE_SSE_ASM',
 148         ])
 149         if gcc:
 150                 env.Append(CFLAGS = '-m32')
 151                 env.Append(CXXFLAGS = '-m32')
 152
 153
 154 # Posix
 155 if platform in ('posix', 'linux', 'freebsd', 'darwin'):
 156         env.Append(CPPDEFINES = [
 157                 '_POSIX_SOURCE',
 158                 ('_POSIX_C_SOURCE', '199309L'),
 159                 '_SVID_SOURCE',
 160                 '_BSD_SOURCE',
 161                 '_GNU_SOURCE',
 162
 163                 'PTHREADS',
 164                 'HAVE_POSIX_MEMALIGN',
 165         ])
 166         env.Append(CPPPATH = ['/usr/X11R6/include'])
 167         env.Append(LIBPATH = ['/usr/X11R6/lib'])
 168         env.Append(LIBS = [
 169                 'm',
 170                 'pthread',
 171                 'expat',
 172                 'dl',
 173         ])
 174
 175
 176 # DRI
 177 if dri:
 178         env.ParseConfig('pkg-config --cflags --libs libdrm')
 179         env.Append(CPPDEFINES = [
 180                 ('USE_EXTERNAL_DXTN_LIB', '1'),
 181                 'IN_DRI_DRIVER',
 182                 'GLX_DIRECT_RENDERING',
 183                 'GLX_INDIRECT_RENDERING',
 184         ])
 185
 186 # LLVM
 187 if llvm:
 188         # See also http://www.scons.org/wiki/UsingPkgConfig
 189         env.ParseConfig('llvm-config --cflags --ldflags --libs')
 190         env.Append(CPPDEFINES = ['MESA_LLVM'])
 191         env.Append(CXXFLAGS = ['-Wno-long-long'])
 192
 193
 194 # libGL
 195 if 1:
 196         env.Append(LIBS = [
 197                 'X11',
 198                 'Xext',
 199                 'Xxf86vm',
 200                 'Xdamage',
 201                 'Xfixes',
 202         ])
 203
 204 Export('env')
 205
 206
 207 #######################################################################
 208 # Convenience Library Builder
 209 # based on the stock StaticLibrary and SharedLibrary builders
 210
 211 def createConvenienceLibBuilder(env):
 212     """This is a utility function that creates the ConvenienceLibrary
 213     Builder in an Environment if it is not there already.
 214
 215     If it is already there, we return the existing one.
 216     """
 217
 218     try:
 219         convenience_lib = env['BUILDERS']['ConvenienceLibrary']
 220     except KeyError:
 221         action_list = [ Action("$ARCOM", "$ARCOMSTR") ]
 222         if env.Detect('ranlib'):
 223             ranlib_action = Action("$RANLIBCOM", "$RANLIBCOMSTR")
 224             action_list.append(ranlib_action)
 225
 226         convenience_lib = Builder(action = action_list,
 227                                   emitter = '$LIBEMITTER',
 228                                   prefix = '$LIBPREFIX',
 229                                   suffix = '$LIBSUFFIX',
 230                                   src_suffix = '$SHOBJSUFFIX',
 231                                   src_builder = 'SharedObject')
 232         env['BUILDERS']['ConvenienceLibrary'] = convenience_lib
 233         env['BUILDERS']['Library'] = convenience_lib
 234
 235     return convenience_lib
 236
 237 createConvenienceLibBuilder(env)
 238
 239
 240 #######################################################################
 241 # Invoke SConscripts
 242
 243 # Put build output in a separate dir, which depends on the current configuration
 244 # See also http://www.scons.org/wiki/AdvancedBuildExample
 245 build_topdir = 'build'
 246 build_subdir = platform
 247 if dri:
 248         build_subdir += "-dri"
 249 if llvm:
 250         build_subdir += "-llvm"
 251 if x86:
 252         build_subdir += "-x86"
 253 if debug:
 254         build_subdir += "-debug"
 255 build_dir = os.path.join(build_topdir, build_subdir)
 256
 257 # TODO: Build several variants at the same time?
 258 # http://www.scons.org/wiki/SimultaneousVariantBuilds
 259
 260 SConscript(
 261         'src/SConscript',
 262         build_dir = build_dir,
 263         duplicate = 0 # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
 264 )