1#!/usr/bin/env python 2# encoding: utf-8 3# Matthias Jahn jahn dôt matthias ât freenet dôt de 2007 (pmarat) 4 5""" 6Try to detect a C++ compiler from the list of supported compilers (g++, msvc, etc):: 7 8 def options(opt): 9 opt.load('compiler_cxx') 10 def configure(cnf): 11 cnf.load('compiler_cxx') 12 def build(bld): 13 bld.program(source='main.cpp', target='app') 14 15The compilers are associated to platforms in :py:attr:`waflib.Tools.compiler_cxx.cxx_compiler`. To register 16a new C++ compiler named *cfoo* (assuming the tool ``waflib/extras/cfoo.py`` exists), use:: 17 18 from waflib.Tools.compiler_cxx import cxx_compiler 19 cxx_compiler['win32'] = ['cfoo', 'msvc', 'gcc'] 20 21 def options(opt): 22 opt.load('compiler_cxx') 23 def configure(cnf): 24 cnf.load('compiler_cxx') 25 def build(bld): 26 bld.program(source='main.c', target='app') 27 28Not all compilers need to have a specific tool. For example, the clang compilers can be detected by the gcc tools when using:: 29 30 $ CXX=clang waf configure 31""" 32 33 34import re 35from waflib.Tools import ccroot 36from waflib import Utils 37from waflib.Logs import debug 38 39cxx_compiler = { 40'win32': ['msvc', 'g++', 'clang++'], 41'cygwin': ['g++'], 42'darwin': ['clang++', 'g++'], 43'aix': ['xlc++', 'g++', 'clang++'], 44'linux': ['g++', 'clang++', 'icpc'], 45'sunos': ['sunc++', 'g++'], 46'irix': ['g++'], 47'hpux': ['g++'], 48'osf1V': ['g++'], 49'gnu': ['g++', 'clang++'], 50'java': ['g++', 'msvc', 'clang++', 'icpc'], 51'default': ['clang++', 'g++'] 52} 53""" 54Dict mapping the platform names to Waf tools finding specific C++ compilers:: 55 56 from waflib.Tools.compiler_cxx import cxx_compiler 57 cxx_compiler['linux'] = ['gxx', 'icpc', 'suncxx'] 58""" 59 60def default_compilers(): 61 build_platform = Utils.unversioned_sys_platform() 62 possible_compiler_list = cxx_compiler.get(build_platform, cxx_compiler['default']) 63 return ' '.join(possible_compiler_list) 64 65def configure(conf): 66 """ 67 Detects a suitable C++ compiler 68 69 :raises: :py:class:`waflib.Errors.ConfigurationError` when no suitable compiler is found 70 """ 71 try: 72 test_for_compiler = conf.options.check_cxx_compiler or default_compilers() 73 except AttributeError: 74 conf.fatal("Add options(opt): opt.load('compiler_cxx')") 75 76 for compiler in re.split('[ ,]+', test_for_compiler): 77 conf.env.stash() 78 conf.start_msg('Checking for %r (C++ compiler)' % compiler) 79 try: 80 conf.load(compiler) 81 except conf.errors.ConfigurationError as e: 82 conf.env.revert() 83 conf.end_msg(False) 84 debug('compiler_cxx: %r', e) 85 else: 86 if conf.env.CXX: 87 conf.end_msg(conf.env.get_flat('CXX')) 88 conf.env.COMPILER_CXX = compiler 89 conf.env.commit() 90 break 91 conf.env.revert() 92 conf.end_msg(False) 93 else: 94 conf.fatal('could not configure a C++ compiler!') 95 96def options(opt): 97 """ 98 This is how to provide compiler preferences on the command-line:: 99 100 $ waf configure --check-cxx-compiler=gxx 101 """ 102 test_for_compiler = default_compilers() 103 opt.load_special_tools('cxx_*.py') 104 cxx_compiler_opts = opt.add_option_group('Configuration options') 105 cxx_compiler_opts.add_option('--check-cxx-compiler', default=None, 106 help='list of C++ compilers to try [%s]' % test_for_compiler, 107 dest="check_cxx_compiler") 108 109 for x in test_for_compiler.split(): 110 opt.load('%s' % x) 111 112