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#######################################################################
# Top-level SConstruct
import os
import os.path
import sys
#######################################################################
# Configuration options
#
# For example, invoke scons as
#
# scons debug=1 dri=0 machine=x86
#
# to set configuration variables. Or you can write those options to a file
# named config.py:
#
# # config.py
# debug=1
# dri=0
# machine='x86'
#
# Invoke
#
# scons -h
#
# to get the full list of options. See scons manpage for more info.
#
# TODO: auto-detect defaults
opts = Options('config.py')
opts.Add(BoolOption('debug', 'build debug version', False))
opts.Add(BoolOption('dri', 'build dri drivers', False))
opts.Add(BoolOption('llvm', 'use llvm', False))
opts.Add(EnumOption('machine', 'use machine-specific assembly code', 'x86',
allowed_values=('generic', 'x86', 'x86-64')))
env = Environment(
options = opts,
ENV = os.environ)
Help(opts.GenerateHelpText(env))
# for debugging
#print env.Dump()
if 0:
# platform will be typically 'posix' or 'win32'
platform = env['PLATFORM']
else:
# platform will be one of 'linux', 'freebsd', 'win32', 'darwin', etc.
platform = sys.platform
if platform == 'linux2':
platform = 'linux'
# replicate options values in local variables
debug = env['debug']
dri = env['dri']
llvm = env['llvm']
machine = env['machine']
# derived options
x86 = machine == 'x86'
gcc = platform in ('posix', 'linux', 'freebsd', 'darwin')
msvc = platform == 'win32'
Export([
'debug',
'x86',
'dri',
'llvm',
'platform',
'gcc',
'msvc',
])
#######################################################################
# Environment setup
#
# TODO: put the compiler specific settings in seperate files
# TODO: auto-detect as much as possible
# Optimization flags
if gcc:
if debug:
env.Append(CFLAGS = '-O0 -g3')
env.Append(CXXFLAGS = '-O0 -g3')
else:
env.Append(CFLAGS = '-O3 -g3')
env.Append(CXXFLAGS = '-O3 -g3')
env.Append(CFLAGS = '-Wall -Wmissing-prototypes -std=c99 -ffast-math -pedantic')
env.Append(CXXFLAGS = '-Wall -pedantic')
# Be nice to Eclipse
env.Append(CFLAGS = '-fmessage-length=0')
env.Append(CXXFLAGS = '-fmessage-length=0')
# Defines
if debug:
env.Append(CPPDEFINES = ['DEBUG'])
else:
env.Append(CPPDEFINES = ['NDEBUG'])
# Includes
env.Append(CPPPATH = [
'#/include',
'#/src/gallium/include',
'#/src/gallium/auxiliary',
'#/src/gallium/drivers',
])
# x86 assembly
if x86:
env.Append(CPPDEFINES = [
'USE_X86_ASM',
'USE_MMX_ASM',
'USE_3DNOW_ASM',
'USE_SSE_ASM',
])
if gcc:
env.Append(CFLAGS = '-m32')
env.Append(CXXFLAGS = '-m32')
# Posix
if platform in ('posix', 'linux', 'freebsd', 'darwin'):
env.Append(CPPDEFINES = [
'_POSIX_SOURCE',
('_POSIX_C_SOURCE', '199309L'),
'_SVID_SOURCE',
'_BSD_SOURCE',
'_GNU_SOURCE',
'PTHREADS',
'HAVE_POSIX_MEMALIGN',
])
env.Append(CPPPATH = ['/usr/X11R6/include'])
env.Append(LIBPATH = ['/usr/X11R6/lib'])
env.Append(LIBS = [
'm',
'pthread',
'expat',
'dl',
])
# DRI
if dri:
env.ParseConfig('pkg-config --cflags --libs libdrm')
env.Append(CPPDEFINES = [
('USE_EXTERNAL_DXTN_LIB', '1'),
'IN_DRI_DRIVER',
'GLX_DIRECT_RENDERING',
'GLX_INDIRECT_RENDERING',
])
# LLVM
if llvm:
# See also http://www.scons.org/wiki/UsingPkgConfig
env.ParseConfig('llvm-config --cflags --ldflags --libs')
env.Append(CPPDEFINES = ['MESA_LLVM'])
env.Append(CXXFLAGS = ['-Wno-long-long'])
# libGL
if 1:
env.Append(LIBS = [
'X11',
'Xext',
'Xxf86vm',
'Xdamage',
'Xfixes',
])
Export('env')
#######################################################################
# Convenience Library Builder
# based on the stock StaticLibrary and SharedLibrary builders
def createConvenienceLibBuilder(env):
"""This is a utility function that creates the ConvenienceLibrary
Builder in an Environment if it is not there already.
If it is already there, we return the existing one.
"""
try:
convenience_lib = env['BUILDERS']['ConvenienceLibrary']
except KeyError:
action_list = [ Action("$ARCOM", "$ARCOMSTR") ]
if env.Detect('ranlib'):
ranlib_action = Action("$RANLIBCOM", "$RANLIBCOMSTR")
action_list.append(ranlib_action)
convenience_lib = Builder(action = action_list,
emitter = '$LIBEMITTER',
prefix = '$LIBPREFIX',
suffix = '$LIBSUFFIX',
src_suffix = '$SHOBJSUFFIX',
src_builder = 'SharedObject')
env['BUILDERS']['ConvenienceLibrary'] = convenience_lib
env['BUILDERS']['Library'] = convenience_lib
return convenience_lib
createConvenienceLibBuilder(env)
#######################################################################
# Invoke SConscripts
# Put build output in a separate dir, which depends on the current configuration
# See also http://www.scons.org/wiki/AdvancedBuildExample
build_topdir = 'build'
build_subdir = platform
if dri:
build_subdir += "-dri"
if llvm:
build_subdir += "-llvm"
if x86:
build_subdir += "-x86"
if debug:
build_subdir += "-debug"
build_dir = os.path.join(build_topdir, build_subdir)
# TODO: Build several variants at the same time?
# http://www.scons.org/wiki/SimultaneousVariantBuilds
SConscript(
'src/SConscript',
build_dir = build_dir,
duplicate = 0 # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
)
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