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#!/usr/bin/env python
# encoding: utf-8
# Matthias Jahn jahn dôt matthias ât freenet dôt de 2007 (pmarat)
"""
Try to detect a C++ compiler from the list of supported compilers (g++, msvc, etc)::
def options(opt):
opt.load('compiler_cxx')
def configure(cnf):
cnf.load('compiler_cxx')
def build(bld):
bld.program(source='main.cpp', target='app')
The compilers are associated to platforms in :py:attr:`waflib.Tools.compiler_cxx.cxx_compiler`. To register
a new C++ compiler named *cfoo* (assuming the tool ``waflib/extras/cfoo.py`` exists), use::
from waflib.Tools.compiler_cxx import cxx_compiler
cxx_compiler['win32'] = ['cfoo', 'msvc', 'gcc']
def options(opt):
opt.load('compiler_cxx')
def configure(cnf):
cnf.load('compiler_cxx')
def build(bld):
bld.program(source='main.c', target='app')
Not all compilers need to have a specific tool. For example, the clang compilers can be detected by the gcc tools when using::
$ CXX=clang waf configure
"""
import re
from waflib.Tools import ccroot
from waflib import Utils
from waflib.Logs import debug
cxx_compiler = {
'win32': ['msvc', 'g++', 'clang++'],
'cygwin': ['g++', 'clang++'],
'darwin': ['clang++', 'g++'],
'aix': ['xlc++', 'g++', 'clang++'],
'linux': ['g++', 'clang++', 'icpc'],
'sunos': ['sunc++', 'g++'],
'irix': ['g++'],
'hpux': ['g++'],
'osf1V': ['g++'],
'gnu': ['g++', 'clang++'],
'java': ['g++', 'msvc', 'clang++', 'icpc'],
'gnukfreebsd': ['g++', 'clang++'],
'default': ['clang++', 'g++']
}
"""
Dict mapping the platform names to Waf tools finding specific C++ compilers::
from waflib.Tools.compiler_cxx import cxx_compiler
cxx_compiler['linux'] = ['gxx', 'icpc', 'suncxx']
"""
def default_compilers():
build_platform = Utils.unversioned_sys_platform()
possible_compiler_list = cxx_compiler.get(build_platform, cxx_compiler['default'])
return ' '.join(possible_compiler_list)
def configure(conf):
"""
Detects a suitable C++ compiler
:raises: :py:class:`waflib.Errors.ConfigurationError` when no suitable compiler is found
"""
try:
test_for_compiler = conf.options.check_cxx_compiler or default_compilers()
except AttributeError:
conf.fatal("Add options(opt): opt.load('compiler_cxx')")
for compiler in re.split('[ ,]+', test_for_compiler):
conf.env.stash()
conf.start_msg('Checking for %r (C++ compiler)' % compiler)
try:
conf.load(compiler)
except conf.errors.ConfigurationError as e:
conf.env.revert()
conf.end_msg(False)
debug('compiler_cxx: %r', e)
else:
if conf.env.CXX:
conf.end_msg(conf.env.get_flat('CXX'))
conf.env.COMPILER_CXX = compiler
conf.env.commit()
break
conf.env.revert()
conf.end_msg(False)
else:
conf.fatal('could not configure a C++ compiler!')
def options(opt):
"""
This is how to provide compiler preferences on the command-line::
$ waf configure --check-cxx-compiler=gxx
"""
test_for_compiler = default_compilers()
opt.load_special_tools('cxx_*.py')
cxx_compiler_opts = opt.add_option_group('Configuration options')
cxx_compiler_opts.add_option('--check-cxx-compiler', default=None,
help='list of C++ compilers to try [%s]' % test_for_compiler,
dest="check_cxx_compiler")
for x in test_for_compiler.split():
opt.load('%s' % x)
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