SCons/Tool/cxx.py

   1 # MIT License
   2 #
   3 # Copyright The SCons Foundation
   4 #
   5 # Permission is hereby granted, free of charge, to any person obtaining
   6 # a copy of this software and associated documentation files (the
   7 # "Software"), to deal in the Software without restriction, including
   8 # without limitation the rights to use, copy, modify, merge, publish,
   9 # distribute, sublicense, and/or sell copies of the Software, and to
  10 # permit persons to whom the Software is furnished to do so, subject to
  11 # the following conditions:
  12 #
  13 # The above copyright notice and this permission notice shall be included
  14 # in all copies or substantial portions of the Software.
  15 #
  16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
  17 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  18 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  20 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  21 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  22 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23
  24 """Tool-specific initialization for generic Posix C++ compilers.
  25
  26 There normally shouldn't be any need to import this module directly.
  27 It will usually be imported through the generic SCons.Tool.Tool()
  28 selection method.
  29 """
  30
  31 import os.path
  32
  33 import SCons.Defaults
  34 import SCons.Util
  35
  36 compilers = ['CC', 'c++']
  37
  38 CXXSuffixes = ['.cpp', '.cc', '.cxx', '.c++', '.C++', '.mm']
  39 if SCons.Util.case_sensitive_suffixes('.c', '.C'):
  40     CXXSuffixes.append('.C')
  41
  42 def iscplusplus(source) -> bool:
  43     if not source:
  44         # Source might be None for unusual cases like SConf.
  45         return False
  46     for s in source:
  47         if s.sources:
  48             ext = os.path.splitext(str(s.sources[0]))[1]
  49             if ext in CXXSuffixes:
  50                 return True
  51     return False
  52
  53 def generate(env) -> None:
  54     """
  55     Add Builders and construction variables for Visual Age C++ compilers
  56     to an Environment.
  57     """
  58     import SCons.Tool
  59     import SCons.Tool.cc
  60     static_obj, shared_obj = SCons.Tool.createObjBuilders(env)
  61
  62     for suffix in CXXSuffixes:
  63         static_obj.add_action(suffix, SCons.Defaults.CXXAction)
  64         shared_obj.add_action(suffix, SCons.Defaults.ShCXXAction)
  65         static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
  66         shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
  67
  68     SCons.Tool.cc.add_common_cc_variables(env)
  69
  70     if 'CXX' not in env:
  71         env['CXX']    = env.Detect(compilers) or compilers[0]
  72     env['CXXFLAGS']   = SCons.Util.CLVar('')
  73     env['CXXCOM']     = '$CXX -o $TARGET -c $CXXFLAGS $CCFLAGS $_CCCOMCOM $SOURCES'
  74     env['SHCXX']      = '$CXX'
  75     env['SHCXXFLAGS'] = SCons.Util.CLVar('$CXXFLAGS')
  76     env['SHCXXCOM']   = '$SHCXX -o $TARGET -c $SHCXXFLAGS $SHCCFLAGS $_CCCOMCOM $SOURCES'
  77
  78     env['CPPDEFPREFIX']  = '-D'
  79     env['CPPDEFSUFFIX']  = ''
  80     env['INCPREFIX']  = '-I'
  81     env['INCSUFFIX']  = ''
  82     env['SHOBJSUFFIX'] = '.os'
  83     env['OBJSUFFIX'] = '.o'
  84     env['STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME'] = 0
  85
  86     env['CXXFILESUFFIX'] = '.cc'
  87
  88 def exists(env):
  89     return env.Detect(env.get('CXX', compilers))
  90
  91 # Local Variables:
  92 # tab-width:4
  93 # indent-tabs-mode:nil
  94 # End:
  95 # vim: set expandtab tabstop=4 shiftwidth=4: