mapnik/scons/scons-local-2.3.4/SCons/Tool/g++.py

"""SCons.Tool.g++

Tool-specific initialization for g++.

There normally shouldn't be any need to import this module directly.
It will usually be imported through the generic SCons.Tool.Tool()
selection method.

"""

#
# Copyright (c) 2001 - 2014 The SCons Foundation
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# The above copyright notice and this permission notice shall be included
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__revision__ = "src/engine/SCons/Tool/g++.py  2014/09/27 12:51:43 garyo"

import os.path
import re
import subprocess

import SCons.Tool
import SCons.Util

import gcc

cplusplus = __import__('c++', globals(), locals(), [])

compilers = ['g++']

def generate(env):
    """Add Builders and construction variables for g++ to an Environment."""
    static_obj, shared_obj = SCons.Tool.createObjBuilders(env)

    if 'CXX' not in env:
        env['CXX']    = env.Detect(compilers) or compilers[0]

    cplusplus.generate(env)

    # platform specific settings
    if env['PLATFORM'] == 'aix':
        env['SHCXXFLAGS'] = SCons.Util.CLVar('$CXXFLAGS -mminimal-toc')
        env['STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME'] = 1
        env['SHOBJSUFFIX'] = '$OBJSUFFIX'
    elif env['PLATFORM'] == 'hpux':
        env['SHOBJSUFFIX'] = '.pic.o'
    elif env['PLATFORM'] == 'sunos':
        env['SHOBJSUFFIX'] = '.pic.o'
    # determine compiler version
    version = gcc.detect_version(env, env['CXX'])
    if version:
        env['CXXVERSION'] = version

def exists(env):
    # is executable, and is a GNU compiler (or accepts '--version' at least)
    return gcc.detect_version(env, env.Detect(env.get('CXX', compilers)))

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