Import of the watch repository from Pebble

third_party/waf/waf-light/waflib/Tools/compiler_cxx.py

@@ -0,0 +1,102 @@
+#!/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::
+
+	def options(opt):
+		opt.load('compiler_cxx')
+	def configure(cnf):
+		from waflib.Tools.compiler_cxx import cxx_compiler
+		cxx_compiler['win32'] = ['cfoo', 'msvc', 'gcc']
+		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 os, sys, imp, types
+from waflib.Tools import ccroot
+from waflib import Utils, Configure
+from waflib.Logs import debug
+
+cxx_compiler = {
+'win32':  ['msvc', 'g++'],
+'cygwin': ['g++'],
+'darwin': ['g++'],
+'aix':    ['xlc++', 'g++'],
+'linux':  ['g++', 'icpc'],
+'sunos':  ['sunc++', 'g++'],
+'irix':   ['g++'],
+'hpux':   ['g++'],
+'gnu':    ['g++'],
+'java':   ['g++', 'msvc', 'icpc'],
+'default': ['g++']
+}
+"""
+Dict mapping the platform names to waf tools finding specific compilers::
+
+	from waflib.Tools.compiler_cxx import cxx_compiler
+	cxx_compiler['linux'] = ['gxx', 'icpc', 'suncxx']
+"""
+
+
+def configure(conf):
+	"""
+	Try to find a suitable C++ compiler or raise a :py:class:`waflib.Errors.ConfigurationError`.
+	"""
+	try: test_for_compiler = conf.options.check_cxx_compiler
+	except AttributeError: conf.fatal("Add options(opt): opt.load('compiler_cxx')")
+
+	for compiler in test_for_compiler.split():
+		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
+				break
+			conf.end_msg(False)
+	else:
+		conf.fatal('could not configure a c++ compiler!')
+
+def options(opt):
+	"""
+	Restrict the compiler detection from the command-line::
+
+		$ waf configure --check-cxx-compiler=gxx
+	"""
+	opt.load_special_tools('cxx_*.py')
+	global cxx_compiler
+	build_platform = Utils.unversioned_sys_platform()
+	possible_compiler_list = cxx_compiler[build_platform in cxx_compiler and build_platform or 'default']
+	test_for_compiler = ' '.join(possible_compiler_list)
+	cxx_compiler_opts = opt.add_option_group('C++ Compiler Options')
+	cxx_compiler_opts.add_option('--check-cxx-compiler', default="%s" % test_for_compiler,
+		help='On this platform (%s) the following C++ Compiler will be checked by default: "%s"' % (build_platform, test_for_compiler),
+		dest="check_cxx_compiler")
+
+	for x in test_for_compiler.split():
+		opt.load('%s' % x)
+