ceph/src/boost/libs/python/SConstruct

   1 # -*- python -*-
   2 #
   3 # Copyright (c) 2016 Stefan Seefeld
   4 # All rights reserved.
   5 #
   6 # Distributed under the Boost Software License, Version 1.0.
   7 # (See accompanying file LICENSE_1_0.txt or copy at
   8 # http://www.boost.org/LICENSE_1_0.txt)
   9
  10 import SCons.Script.Main
  11 import config
  12 import config.ui
  13 import platform
  14 import os
  15 import subprocess
  16 import re
  17
  18 #
  19 # We try to mimic the typical autotools-workflow.
  20 #
  21 # * In a 'configure' step all the essential build parameters are established
  22 #   (either by explicit command-line arguments or from configure checks)
  23 # * A subsequent build step can then simply read the cached variables, so
  24 #   users don't have to memorize and re-issue the arguments on each subsequent
  25 #   invocation, and neither do the config checks need to be re-run.
  26 #
  27 # The essential part here is to define a 'config' target, which removes any
  28 # caches that may still be lingering around, then runs the checks.
  29
  30 if 'config' in COMMAND_LINE_TARGETS:
  31     # Clear the cache
  32     try: os.remove('bin.SCons/config.py')
  33     except: pass
  34 if not os.path.exists('bin.SCons/'):
  35     os.mkdir('bin.SCons/')
  36 vars = Variables('bin.SCons/config.py', ARGUMENTS)
  37 config.add_options(vars)
  38 arch = ARGUMENTS.get('arch', platform.machine())
  39 env_vars = {}
  40 if 'CXX' in os.environ: env_vars['CXX'] = os.environ['CXX']
  41 if 'CXXFLAGS' in os.environ: env_vars['CXXFLAGS'] = os.environ['CXXFLAGS'].split()
  42 env_vars['ENV'] = os.environ #{'PATH': os.environ['PATH'], 'TMP' : os.environ['TMP']}
  43 env = Environment(toolpath=['config/tools'],
  44                   tools=['default', 'libs', 'tests', 'doc', 'sphinx4scons'],
  45                   variables=vars,
  46                   TARGET_ARCH=arch,
  47                   **env_vars)
  48 if 'gcc' in env['TOOLS']:
  49     # Earlier SCons versions (~ 2.3.0) can't handle CXX=clang++.
  50     version = subprocess.check_output([env['CXX'], '--version'])
  51     match = re.search(r'[0-9]+(\.[0-9]+)+', version)
  52     if match:
  53         version = match.group(0)
  54     else:
  55         version = 'unknown'
  56     env['CXXVERSION'] = version
  57
  58 Help(config.ui.help(vars, env) + """
  59 Variables are saved in bin.SCons/config.py and persist between scons invocations.
  60 """)
  61
  62 if GetOption('help'):
  63     Return()
  64
  65 build_dir = config.prepare_build_dir(env)
  66 config_log = '{}/config.log'.format(build_dir)
  67
  68 # configure
  69 SConsignFile('{}/.sconsign'.format(build_dir))
  70 #env.Decider('MD5-timestamp')
  71 env.Decider('timestamp-newer')
  72 checks = config.get_checks(env)
  73 if 'config' in COMMAND_LINE_TARGETS:
  74     conf=env.Configure(custom_tests=checks, log_file=config_log, conf_dir=build_dir)
  75     if False in (getattr(conf, c)() for c in checks):
  76         Exit(1)
  77     env = conf.Finish()
  78     vars.Save('bin.SCons/config.py', env)
  79
  80 if not os.path.exists(config_log):
  81     print('Please run `scons config` first. (See `scons -h` for available options.)')
  82     Exit(1)
  83
  84 if not GetOption('verbose'):
  85     config.ui.pretty_output(env)
  86
  87 # build
  88 env['BPL_VERSION'] = '1.65'
  89 for e in config.variants(env):
  90     variant_dir=e.subst("$BOOST_CURRENT_VARIANT_DIR")
  91     e.SConscript('src/SConscript', variant_dir=variant_dir + '/src',
  92                  exports = { 'env' : e.Clone(BOOST_LIB = 'python') })
  93     if 'test' in COMMAND_LINE_TARGETS:
  94         test_env = e.Clone(BOOST_LIB = 'python', BOOST_TEST = True)
  95         test_env.BoostUseLib('python')
  96         e.SConscript('test/SConscript', variant_dir=variant_dir + '/test',
  97                      exports = { 'env' : test_env })
  98
  99 if 'doc' in COMMAND_LINE_TARGETS:
 100     env.SConscript('doc/SConscript', variant_dir='bin.SCons/doc',
 101                    exports = { 'env' : e.Clone(BOOST_LIB = 'python') })