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