SconsLocal/scons-local-3.0.0/SCons/Tool/cxx.py

"""SCons.Tool.c++

Tool-specific initialization for generic Posix C++ compilers.

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.
"""

#
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__revision__ = "src/engine/SCons/Tool/cxx.py rel_3.0.0:4395:8972f6a2f699 2017/09/18 12:59:24 bdbaddog"

import os.path

import SCons.Tool
import SCons.Defaults
import SCons.Util

compilers = ['CC', 'c++']

CXXSuffixes = ['.cpp', '.cc', '.cxx', '.c++', '.C++', '.mm']
if SCons.Util.case_sensitive_suffixes('.c', '.C'):
    CXXSuffixes.append('.C')

def iscplusplus(source):
    if not source:
        # Source might be None for unusual cases like SConf.
        return 0
    for s in source:
        if s.sources:
            ext = os.path.splitext(str(s.sources[0]))[1]
            if ext in CXXSuffixes:
                return 1
    return 0

def generate(env):
    """
    Add Builders and construction variables for Visual Age C++ compilers
    to an Environment.
    """
    import SCons.Tool
    import SCons.Tool.cc
    static_obj, shared_obj = SCons.Tool.createObjBuilders(env)

    for suffix in CXXSuffixes:
        static_obj.add_action(suffix, SCons.Defaults.CXXAction)
        shared_obj.add_action(suffix, SCons.Defaults.ShCXXAction)
        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)

    SCons.Tool.cc.add_common_cc_variables(env)

    if 'CXX' not in env:
        env['CXX']    = env.Detect(compilers) or compilers[0]
    env['CXXFLAGS']   = SCons.Util.CLVar('')
    env['CXXCOM']     = '$CXX -o $TARGET -c $CXXFLAGS $CCFLAGS $_CCCOMCOM $SOURCES'
    env['SHCXX']      = '$CXX'
    env['SHCXXFLAGS'] = SCons.Util.CLVar('$CXXFLAGS')
    env['SHCXXCOM']   = '$SHCXX -o $TARGET -c $SHCXXFLAGS $SHCCFLAGS $_CCCOMCOM $SOURCES'

    env['CPPDEFPREFIX']  = '-D'
    env['CPPDEFSUFFIX']  = ''
    env['INCPREFIX']  = '-I'
    env['INCSUFFIX']  = ''
    env['SHOBJSUFFIX'] = '.os'
    env['OBJSUFFIX'] = '.o'
    env['STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME'] = 0

    env['CXXFILESUFFIX'] = '.cc'

def exists(env):
    return env.Detect(env.get('CXX', compilers))

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