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