path: root/waflib/Tools/c_config.py

#! /usr/bin/env python
# encoding: utf-8
# WARNING! Do not edit! https://waf.io/book/index.html#_obtaining_the_waf_file

from __future__ import with_statement
import os,re,shlex
from waflib import Build,Utils,Task,Options,Logs,Errors,Runner
from waflib.TaskGen import after_method,feature
from waflib.Configure import conf
WAF_CONFIG_H='config.h'
DEFKEYS='define_key'
INCKEYS='include_key'
SNIP_EMPTY_PROGRAM='''
int main(int argc, char **argv) {
	(void)argc; (void)argv;
	return 0;
}
'''
MACRO_TO_DESTOS={'__linux__':'linux','__GNU__':'gnu','__FreeBSD__':'freebsd','__NetBSD__':'netbsd','__OpenBSD__':'openbsd','__sun':'sunos','__hpux':'hpux','__sgi':'irix','_AIX':'aix','__CYGWIN__':'cygwin','__MSYS__':'cygwin','_UWIN':'uwin','_WIN64':'win32','_WIN32':'win32','__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__':'darwin','__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__':'darwin','__QNX__':'qnx','__native_client__':'nacl'}
MACRO_TO_DEST_CPU={'__x86_64__':'x86_64','__amd64__':'x86_64','__i386__':'x86','__ia64__':'ia','__mips__':'mips','__sparc__':'sparc','__alpha__':'alpha','__aarch64__':'aarch64','__thumb__':'thumb','__arm__':'arm','__hppa__':'hppa','__powerpc__':'powerpc','__ppc__':'powerpc','__convex__':'convex','__m68k__':'m68k','__s390x__':'s390x','__s390__':'s390','__sh__':'sh','__xtensa__':'xtensa',}
@conf
def parse_flags(self,line,uselib_store,env=None,force_static=False,posix=None):
	assert(isinstance(line,str))
	env=env or self.env
	if posix is None:
		posix=True
		if'\\'in line:
			posix=('\\ 'in line)or('\\\\'in line)
	lex=shlex.shlex(line,posix=posix)
	lex.whitespace_split=True
	lex.commenters=''
	lst=list(lex)
	uselib=uselib_store
	def app(var,val):
		env.append_value('%s_%s'%(var,uselib),val)
	def appu(var,val):
		env.append_unique('%s_%s'%(var,uselib),val)
	static=False
	while lst:
		x=lst.pop(0)
		st=x[:2]
		ot=x[2:]
		if st=='-I'or st=='/I':
			if not ot:
				ot=lst.pop(0)
			appu('INCLUDES',ot)
		elif st=='-i':
			tmp=[x,lst.pop(0)]
			app('CFLAGS',tmp)
			app('CXXFLAGS',tmp)
		elif st=='-D'or(env.CXX_NAME=='msvc'and st=='/D'):
			if not ot:
				ot=lst.pop(0)
			app('DEFINES',ot)
		elif st=='-l':
			if not ot:
				ot=lst.pop(0)
			prefix='STLIB'if(force_static or static)else'LIB'
			app(prefix,ot)
		elif st=='-L':
			if not ot:
				ot=lst.pop(0)
			prefix='STLIBPATH'if(force_static or static)else'LIBPATH'
			appu(prefix,ot)
		elif x.startswith('/LIBPATH:'):
			prefix='STLIBPATH'if(force_static or static)else'LIBPATH'
			appu(prefix,x.replace('/LIBPATH:',''))
		elif x.startswith('-std='):
			prefix='CXXFLAGS'if'++'in x else'CFLAGS'
			app(prefix,x)
		elif x.startswith('+')or x in('-pthread','-fPIC','-fpic','-fPIE','-fpie'):
			app('CFLAGS',x)
			app('CXXFLAGS',x)
			app('LINKFLAGS',x)
		elif x=='-framework':
			appu('FRAMEWORK',lst.pop(0))
		elif x.startswith('-F'):
			appu('FRAMEWORKPATH',x[2:])
		elif x=='-Wl,-rpath'or x=='-Wl,-R':
			app('RPATH',lst.pop(0).lstrip('-Wl,'))
		elif x.startswith('-Wl,-R,'):
			app('RPATH',x[7:])
		elif x.startswith('-Wl,-R'):
			app('RPATH',x[6:])
		elif x.startswith('-Wl,-rpath,'):
			app('RPATH',x[11:])
		elif x=='-Wl,-Bstatic'or x=='-Bstatic':
			static=True
		elif x=='-Wl,-Bdynamic'or x=='-Bdynamic':
			static=False
		elif x.startswith('-Wl')or x in('-rdynamic','-pie'):
			app('LINKFLAGS',x)
		elif x.startswith(('-m','-f','-dynamic','-O','-g')):
			app('CFLAGS',x)
			app('CXXFLAGS',x)
		elif x.startswith('-bundle'):
			app('LINKFLAGS',x)
		elif x.startswith(('-undefined','-Xlinker')):
			arg=lst.pop(0)
			app('LINKFLAGS',[x,arg])
		elif x.startswith(('-arch','-isysroot')):
			tmp=[x,lst.pop(0)]
			app('CFLAGS',tmp)
			app('CXXFLAGS',tmp)
			app('LINKFLAGS',tmp)
		elif x.endswith(('.a','.so','.dylib','.lib')):
			appu('LINKFLAGS',x)
		else:
			self.to_log('Unhandled flag %r'%x)
@conf
def validate_cfg(self,kw):
	if not'path'in kw:
		if not self.env.PKGCONFIG:
			self.find_program('pkg-config',var='PKGCONFIG')
		kw['path']=self.env.PKGCONFIG
	s=('atleast_pkgconfig_version'in kw)+('modversion'in kw)+('package'in kw)
	if s!=1:
		raise ValueError('exactly one of atleast_pkgconfig_version, modversion and package must be set')
	if not'msg'in kw:
		if'atleast_pkgconfig_version'in kw:
			kw['msg']='Checking for pkg-config version >= %r'%kw['atleast_pkgconfig_version']
		elif'modversion'in kw:
			kw['msg']='Checking for %r version'%kw['modversion']
		else:
			kw['msg']='Checking for %r'%(kw['package'])
	if not'okmsg'in kw and not'modversion'in kw:
		kw['okmsg']='yes'
	if not'errmsg'in kw:
		kw['errmsg']='not found'
	if'atleast_pkgconfig_version'in kw:
		pass
	elif'modversion'in kw:
		if not'uselib_store'in kw:
			kw['uselib_store']=kw['modversion']
		if not'define_name'in kw:
			kw['define_name']='%s_VERSION'%Utils.quote_define_name(kw['uselib_store'])
	else:
		if not'uselib_store'in kw:
			kw['uselib_store']=Utils.to_list(kw['package'])[0].upper()
		if not'define_name'in kw:
			kw['define_name']=self.have_define(kw['uselib_store'])
@conf
def exec_cfg(self,kw):
	path=Utils.to_list(kw['path'])
	env=self.env.env or None
	if kw.get('pkg_config_path'):
		if not env:
			env=dict(self.environ)
		env['PKG_CONFIG_PATH']=kw['pkg_config_path']
	def define_it():
		define_name=kw['define_name']
		if kw.get('global_define',1):
			self.define(define_name,1,False)
		else:
			self.env.append_unique('DEFINES_%s'%kw['uselib_store'],"%s=1"%define_name)
		if kw.get('add_have_to_env',1):
			self.env[define_name]=1
	if'atleast_pkgconfig_version'in kw:
		cmd=path+['--atleast-pkgconfig-version=%s'%kw['atleast_pkgconfig_version']]
		self.cmd_and_log(cmd,env=env)
		return
	if'modversion'in kw:
		version=self.cmd_and_log(path+['--modversion',kw['modversion']],env=env).strip()
		if not'okmsg'in kw:
			kw['okmsg']=version
		self.define(kw['define_name'],version)
		return version
	lst=[]+path
	defi=kw.get('define_variable')
	if not defi:
		defi=self.env.PKG_CONFIG_DEFINES or{}
	for key,val in defi.items():
		lst.append('--define-variable=%s=%s'%(key,val))
	static=kw.get('force_static',False)
	if'args'in kw:
		args=Utils.to_list(kw['args'])
		if'--static'in args or'--static-libs'in args:
			static=True
		lst+=args
	lst.extend(Utils.to_list(kw['package']))
	if'variables'in kw:
		v_env=kw.get('env',self.env)
		vars=Utils.to_list(kw['variables'])
		for v in vars:
			val=self.cmd_and_log(lst+['--variable='+v],env=env).strip()
			var='%s_%s'%(kw['uselib_store'],v)
			v_env[var]=val
		return
	ret=self.cmd_and_log(lst,env=env)
	define_it()
	self.parse_flags(ret,kw['uselib_store'],kw.get('env',self.env),force_static=static,posix=kw.get('posix'))
	return ret
@conf
def check_cfg(self,*k,**kw):
	self.validate_cfg(kw)
	if'msg'in kw:
		self.start_msg(kw['msg'],**kw)
	ret=None
	try:
		ret=self.exec_cfg(kw)
	except self.errors.WafError ,e:
		if'errmsg'in kw:
			self.end_msg(kw['errmsg'],'YELLOW',**kw)
		if Logs.verbose>1:
			self.to_log('Command failure: %s'%e)
		self.fatal('The configuration failed')
	else:
		if not ret:
			ret=True
		kw['success']=ret
		if'okmsg'in kw:
			self.end_msg(self.ret_msg(kw['okmsg'],kw),**kw)
	return ret
def build_fun(bld):
	if bld.kw['compile_filename']:
		node=bld.srcnode.make_node(bld.kw['compile_filename'])
		node.write(bld.kw['code'])
	o=bld(features=bld.kw['features'],source=bld.kw['compile_filename'],target='testprog')
	for k,v in bld.kw.items():
		setattr(o,k,v)
	if not bld.kw.get('quiet'):
		bld.conf.to_log("==>\n%s\n<=="%bld.kw['code'])
@conf
def validate_c(self,kw):
	for x in('type_name','field_name','function_name'):
		if x in kw:
			Logs.warn('Invalid argument %r in test'%x)
	if not'build_fun'in kw:
		kw['build_fun']=build_fun
	if not'env'in kw:
		kw['env']=self.env.derive()
	env=kw['env']
	if not'compiler'in kw and not'features'in kw:
		kw['compiler']='c'
		if env.CXX_NAME and Task.classes.get('cxx'):
			kw['compiler']='cxx'
			if not self.env.CXX:
				self.fatal('a c++ compiler is required')
		else:
			if not self.env.CC:
				self.fatal('a c compiler is required')
	if not'compile_mode'in kw:
		kw['compile_mode']='c'
		if'cxx'in Utils.to_list(kw.get('features',[]))or kw.get('compiler')=='cxx':
			kw['compile_mode']='cxx'
	if not'type'in kw:
		kw['type']='cprogram'
	if not'features'in kw:
		if not'header_name'in kw or kw.get('link_header_test',True):
			kw['features']=[kw['compile_mode'],kw['type']]
		else:
			kw['features']=[kw['compile_mode']]
	else:
		kw['features']=Utils.to_list(kw['features'])
	if not'compile_filename'in kw:
		kw['compile_filename']='test.c'+((kw['compile_mode']=='cxx')and'pp'or'')
	def to_header(dct):
		if'header_name'in dct:
			dct=Utils.to_list(dct['header_name'])
			return''.join(['#include <%s>\n'%x for x in dct])
		return''
	if'framework_name'in kw:
		fwkname=kw['framework_name']
		if not'uselib_store'in kw:
			kw['uselib_store']=fwkname.upper()
		if not kw.get('no_header'):
			fwk='%s/%s.h'%(fwkname,fwkname)
			if kw.get('remove_dot_h'):
				fwk=fwk[:-2]
			val=kw.get('header_name',[])
			kw['header_name']=Utils.to_list(val)+[fwk]
		kw['msg']='Checking for framework %s'%fwkname
		kw['framework']=fwkname
	elif'header_name'in kw:
		if not'msg'in kw:
			kw['msg']='Checking for header %s'%kw['header_name']
		l=Utils.to_list(kw['header_name'])
		assert len(l),'list of headers in header_name is empty'
		kw['code']=to_header(kw)+SNIP_EMPTY_PROGRAM
		if not'uselib_store'in kw:
			kw['uselib_store']=l[0].upper()
		if not'define_name'in kw:
			kw['define_name']=self.have_define(l[0])
	if'lib'in kw:
		if not'msg'in kw:
			kw['msg']='Checking for library %s'%kw['lib']
		if not'uselib_store'in kw:
			kw['uselib_store']=kw['lib'].upper()
	if'stlib'in kw:
		if not'msg'in kw:
			kw['msg']='Checking for static library %s'%kw['stlib']
		if not'uselib_store'in kw:
			kw['uselib_store']=kw['stlib'].upper()
	if'fragment'in kw:
		kw['code']=kw['fragment']
		if not'msg'in kw:
			kw['msg']='Checking for code snippet'
		if not'errmsg'in kw:
			kw['errmsg']='no'
	for(flagsname,flagstype)in(('cxxflags','compiler'),('cflags','compiler'),('linkflags','linker')):
		if flagsname in kw:
			if not'msg'in kw:
				kw['msg']='Checking for %s flags %s'%(flagstype,kw[flagsname])
			if not'errmsg'in kw:
				kw['errmsg']='no'
	if not'execute'in kw:
		kw['execute']=False
	if kw['execute']:
		kw['features'].append('test_exec')
		kw['chmod']=Utils.O755
	if not'errmsg'in kw:
		kw['errmsg']='not found'
	if not'okmsg'in kw:
		kw['okmsg']='yes'
	if not'code'in kw:
		kw['code']=SNIP_EMPTY_PROGRAM
	if self.env[INCKEYS]:
		kw['code']='\n'.join(['#include <%s>'%x for x in self.env[INCKEYS]])+'\n'+kw['code']
	if kw.get('merge_config_header')or env.merge_config_header:
		kw['code']='%s\n\n%s'%(self.get_config_header(),kw['code'])
		env.DEFINES=[]
	if not kw.get('success'):
		kw['success']=None
	if'define_name'in kw:
		self.undefine(kw['define_name'])
	if not'msg'in kw:
		self.fatal('missing "msg" in conf.check(...)')
@conf
def post_check(self,*k,**kw):
	is_success=0
	if kw['execute']:
		if kw['success']is not None:
			if kw.get('define_ret'):
				is_success=kw['success']
			else:
				is_success=(kw['success']==0)
	else:
		is_success=(kw['success']==0)
	if kw.get('define_name'):
		comment=kw.get('comment','')
		define_name=kw['define_name']
		if kw['execute']and kw.get('define_ret')and isinstance(is_success,str):
			if kw.get('global_define',1):
				self.define(define_name,is_success,quote=kw.get('quote',1),comment=comment)
			else:
				if kw.get('quote',1):
					succ='"%s"'%is_success
				else:
					succ=int(is_success)
				val='%s=%s'%(define_name,succ)
				var='DEFINES_%s'%kw['uselib_store']
				self.env.append_value(var,val)
		else:
			if kw.get('global_define',1):
				self.define_cond(define_name,is_success,comment=comment)
			else:
				var='DEFINES_%s'%kw['uselib_store']
				self.env.append_value(var,'%s=%s'%(define_name,int(is_success)))
		if kw.get('add_have_to_env',1):
			if kw.get('uselib_store'):
				self.env[self.have_define(kw['uselib_store'])]=1
			elif kw['execute']and kw.get('define_ret'):
				self.env[define_name]=is_success
			else:
				self.env[define_name]=int(is_success)
	if'header_name'in kw:
		if kw.get('auto_add_header_name'):
			self.env.append_value(INCKEYS,Utils.to_list(kw['header_name']))
	if is_success and'uselib_store'in kw:
		from waflib.Tools import ccroot
		_vars=set()
		for x in kw['features']:
			if x in ccroot.USELIB_VARS:
				_vars|=ccroot.USELIB_VARS[x]
		for k in _vars:
			x=k.lower()
			if x in kw:
				self.env.append_value(k+'_'+kw['uselib_store'],kw[x])
	return is_success
@conf
def check(self,*k,**kw):
	self.validate_c(kw)
	self.start_msg(kw['msg'],**kw)
	ret=None
	try:
		ret=self.run_build(*k,**kw)
	except self.errors.ConfigurationError:
		self.end_msg(kw['errmsg'],'YELLOW',**kw)
		if Logs.verbose>1:
			raise
		else:
			self.fatal('The configuration failed')
	else:
		kw['success']=ret
	ret=self.post_check(*k,**kw)
	if not ret:
		self.end_msg(kw['errmsg'],'YELLOW',**kw)
		self.fatal('The configuration failed %r'%ret)
	else:
		self.end_msg(self.ret_msg(kw['okmsg'],kw),**kw)
	return ret
class test_exec(Task.Task):
	color='PINK'
	def run(self):
		if getattr(self.generator,'rpath',None):
			if getattr(self.generator,'define_ret',False):
				self.generator.bld.retval=self.generator.bld.cmd_and_log([self.inputs[0].abspath()])
			else:
				self.generator.bld.retval=self.generator.bld.exec_command([self.inputs[0].abspath()])
		else:
			env=self.env.env or{}
			env.update(dict(os.environ))
			for var in('LD_LIBRARY_PATH','DYLD_LIBRARY_PATH','PATH'):
				env[var]=self.inputs[0].parent.abspath()+os.path.pathsep+env.get(var,'')
			if getattr(self.generator,'define_ret',False):
				self.generator.bld.retval=self.generator.bld.cmd_and_log([self.inputs[0].abspath()],env=env)
			else:
				self.generator.bld.retval=self.generator.bld.exec_command([self.inputs[0].abspath()],env=env)
@feature('test_exec')
@after_method('apply_link')
def test_exec_fun(self):
	self.create_task('test_exec',self.link_task.outputs[0])
@conf
def check_cxx(self,*k,**kw):
	kw['compiler']='cxx'
	return self.check(*k,**kw)
@conf
def check_cc(self,*k,**kw):
	kw['compiler']='c'
	return self.check(*k,**kw)
@conf
def set_define_comment(self,key,comment):
	coms=self.env.DEFINE_COMMENTS
	if not coms:
		coms=self.env.DEFINE_COMMENTS={}
	coms[key]=comment or''
@conf
def get_define_comment(self,key):
	coms=self.env.DEFINE_COMMENTS or{}
	return coms.get(key,'')
@conf
def define(self,key,val,quote=True,comment=''):
	assert isinstance(key,str)
	if not key:
		return
	if val is True:
		val=1
	elif val in(False,None):
		val=0
	if isinstance(val,int)or isinstance(val,float):
		s='%s=%s'
	else:
		s=quote and'%s="%s"'or'%s=%s'
	app=s%(key,str(val))
	ban=key+'='
	lst=self.env.DEFINES
	for x in lst:
		if x.startswith(ban):
			lst[lst.index(x)]=app
			break
	else:
		self.env.append_value('DEFINES',app)
	self.env.append_unique(DEFKEYS,key)
	self.set_define_comment(key,comment)
@conf
def undefine(self,key,comment=''):
	assert isinstance(key,str)
	if not key:
		return
	ban=key+'='
	lst=[x for x in self.env.DEFINES if not x.startswith(ban)]
	self.env.DEFINES=lst
	self.env.append_unique(DEFKEYS,key)
	self.set_define_comment(key,comment)
@conf
def define_cond(self,key,val,comment=''):
	assert isinstance(key,str)
	if not key:
		return
	if val:
		self.define(key,1,comment=comment)
	else:
		self.undefine(key,comment=comment)
@conf
def is_defined(self,key):
	assert key and isinstance(key,str)
	ban=key+'='
	for x in self.env.DEFINES:
		if x.startswith(ban):
			return True
	return False
@conf
def get_define(self,key):
	assert key and isinstance(key,str)
	ban=key+'='
	for x in self.env.DEFINES:
		if x.startswith(ban):
			return x[len(ban):]
	return None
@conf
def have_define(self,key):
	return(self.env.HAVE_PAT or'HAVE_%s')%Utils.quote_define_name(key)
@conf
def write_config_header(self,configfile='',guard='',top=False,defines=True,headers=False,remove=True,define_prefix=''):
	if not configfile:
		configfile=WAF_CONFIG_H
	waf_guard=guard or'W_%s_WAF'%Utils.quote_define_name(configfile)
	node=top and self.bldnode or self.path.get_bld()
	node=node.make_node(configfile)
	node.parent.mkdir()
	lst=['/* WARNING! All changes made to this file will be lost! */\n']
	lst.append('#ifndef %s\n#define %s\n'%(waf_guard,waf_guard))
	lst.append(self.get_config_header(defines,headers,define_prefix=define_prefix))
	lst.append('\n#endif /* %s */\n'%waf_guard)
	node.write('\n'.join(lst))
	self.env.append_unique(Build.CFG_FILES,[node.abspath()])
	if remove:
		for key in self.env[DEFKEYS]:
			self.undefine(key)
		self.env[DEFKEYS]=[]
@conf
def get_config_header(self,defines=True,headers=False,define_prefix=''):
	lst=[]
	if self.env.WAF_CONFIG_H_PRELUDE:
		lst.append(self.env.WAF_CONFIG_H_PRELUDE)
	if headers:
		for x in self.env[INCKEYS]:
			lst.append('#include <%s>'%x)
	if defines:
		tbl={}
		for k in self.env.DEFINES:
			a,_,b=k.partition('=')
			tbl[a]=b
		for k in self.env[DEFKEYS]:
			caption=self.get_define_comment(k)
			if caption:
				caption=' /* %s */'%caption
			try:
				txt='#define %s%s %s%s'%(define_prefix,k,tbl[k],caption)
			except KeyError:
				txt='/* #undef %s%s */%s'%(define_prefix,k,caption)
			lst.append(txt)
	return"\n".join(lst)
@conf
def cc_add_flags(conf):
	conf.add_os_flags('CPPFLAGS',dup=False)
	conf.add_os_flags('CFLAGS',dup=False)
@conf
def cxx_add_flags(conf):
	conf.add_os_flags('CPPFLAGS',dup=False)
	conf.add_os_flags('CXXFLAGS',dup=False)
@conf
def link_add_flags(conf):
	conf.add_os_flags('LINKFLAGS',dup=False)
	conf.add_os_flags('LDFLAGS',dup=False)
@conf
def cc_load_tools(conf):
	if not conf.env.DEST_OS:
		conf.env.DEST_OS=Utils.unversioned_sys_platform()
	conf.load('c')
@conf
def cxx_load_tools(conf):
	if not conf.env.DEST_OS:
		conf.env.DEST_OS=Utils.unversioned_sys_platform()
	conf.load('cxx')
@conf
def get_cc_version(conf,cc,gcc=False,icc=False,clang=False):
	cmd=cc+['-dM','-E','-']
	env=conf.env.env or None
	try:
		out,err=conf.cmd_and_log(cmd,output=0,input='\n',env=env)
	except Errors.WafError:
		conf.fatal('Could not determine the compiler version %r'%cmd)
	if gcc:
		if out.find('__INTEL_COMPILER')>=0:
			conf.fatal('The intel compiler pretends to be gcc')
		if out.find('__GNUC__')<0 and out.find('__clang__')<0:
			conf.fatal('Could not determine the compiler type')
	if icc and out.find('__INTEL_COMPILER')<0:
		conf.fatal('Not icc/icpc')
	if clang and out.find('__clang__')<0:
		conf.fatal('Not clang/clang++')
	if not clang and out.find('__clang__')>=0:
		conf.fatal('Could not find gcc/g++ (only Clang), if renamed try eg: CC=gcc48 CXX=g++48 waf configure')
	k={}
	if icc or gcc or clang:
		out=out.splitlines()
		for line in out:
			lst=shlex.split(line)
			if len(lst)>2:
				key=lst[1]
				val=lst[2]
				k[key]=val
		def isD(var):
			return var in k
		if not conf.env.DEST_OS:
			conf.env.DEST_OS=''
		for i in MACRO_TO_DESTOS:
			if isD(i):
				conf.env.DEST_OS=MACRO_TO_DESTOS[i]
				break
		else:
			if isD('__APPLE__')and isD('__MACH__'):
				conf.env.DEST_OS='darwin'
			elif isD('__unix__'):
				conf.env.DEST_OS='generic'
		if isD('__ELF__'):
			conf.env.DEST_BINFMT='elf'
		elif isD('__WINNT__')or isD('__CYGWIN__')or isD('_WIN32'):
			conf.env.DEST_BINFMT='pe'
			if not conf.env.IMPLIBDIR:
				conf.env.IMPLIBDIR=conf.env.LIBDIR
			conf.env.LIBDIR=conf.env.BINDIR
		elif isD('__APPLE__'):
			conf.env.DEST_BINFMT='mac-o'
		if not conf.env.DEST_BINFMT:
			conf.env.DEST_BINFMT=Utils.destos_to_binfmt(conf.env.DEST_OS)
		for i in MACRO_TO_DEST_CPU:
			if isD(i):
				conf.env.DEST_CPU=MACRO_TO_DEST_CPU[i]
				break
		Logs.debug('ccroot: dest platform: '+' '.join([conf.env[x]or'?'for x in('DEST_OS','DEST_BINFMT','DEST_CPU')]))
		if icc:
			ver=k['__INTEL_COMPILER']
			conf.env.CC_VERSION=(ver[:-2],ver[-2],ver[-1])
		else:
			if isD('__clang__')and isD('__clang_major__'):
				conf.env.CC_VERSION=(k['__clang_major__'],k['__clang_minor__'],k['__clang_patchlevel__'])
			else:
				conf.env.CC_VERSION=(k['__GNUC__'],k['__GNUC_MINOR__'],k.get('__GNUC_PATCHLEVEL__','0'))
	return k
@conf
def get_xlc_version(conf,cc):
	cmd=cc+['-qversion']
	try:
		out,err=conf.cmd_and_log(cmd,output=0)
	except Errors.WafError:
		conf.fatal('Could not find xlc %r'%cmd)
	for v in(r"IBM XL C/C\+\+.* V(?P<major>\d*)\.(?P<minor>\d*)",):
		version_re=re.compile(v,re.I).search
		match=version_re(out or err)
		if match:
			k=match.groupdict()
			conf.env.CC_VERSION=(k['major'],k['minor'])
			break
	else:
		conf.fatal('Could not determine the XLC version.')
@conf
def get_suncc_version(conf,cc):
	cmd=cc+['-V']
	try:
		out,err=conf.cmd_and_log(cmd,output=0)
	except Errors.WafError ,e:
		if not(hasattr(e,'returncode')and hasattr(e,'stdout')and hasattr(e,'stderr')):
			conf.fatal('Could not find suncc %r'%cmd)
		out=e.stdout
		err=e.stderr
	version=(out or err)
	version=version.splitlines()[0]
	version_re=re.compile(r'cc: (studio.*?|\s+)?(sun\s+(c\+\+|c)|(WorkShop\s+Compilers))?\s+(?P<major>\d*)\.(?P<minor>\d*)',re.I).search
	match=version_re(version)
	if match:
		k=match.groupdict()
		conf.env.CC_VERSION=(k['major'],k['minor'])
	else:
		conf.fatal('Could not determine the suncc version.')
@conf
def add_as_needed(self):
	if self.env.DEST_BINFMT=='elf'and'gcc'in(self.env.CXX_NAME,self.env.CC_NAME):
		self.env.append_unique('LINKFLAGS','-Wl,--as-needed')
class cfgtask(Task.Task):
	def __init__(self,*k,**kw):
		Task.Task.__init__(self,*k,**kw)
		self.run_after=set()
	def display(self):
		return''
	def runnable_status(self):
		for x in self.run_after:
			if not x.hasrun:
				return Task.ASK_LATER
		return Task.RUN_ME
	def uid(self):
		return Utils.SIG_NIL
	def signature(self):
		return Utils.SIG_NIL
	def run(self):
		conf=self.conf
		bld=Build.BuildContext(top_dir=conf.srcnode.abspath(),out_dir=conf.bldnode.abspath())
		bld.env=conf.env
		bld.init_dirs()
		bld.in_msg=1
		bld.logger=self.logger
		bld.multicheck_task=self
		args=self.args
		try:
			if'func'in args:
				bld.test(build_fun=args['func'],msg=args.get('msg',''),okmsg=args.get('okmsg',''),errmsg=args.get('errmsg',''),)
			else:
				args['multicheck_mandatory']=args.get('mandatory',True)
				args['mandatory']=True
				try:
					bld.check(**args)
				finally:
					args['mandatory']=args['multicheck_mandatory']
		except Exception:
			return 1
	def process(self):
		Task.Task.process(self)
		if'msg'in self.args:
			with self.generator.bld.multicheck_lock:
				self.conf.start_msg(self.args['msg'])
				if self.hasrun==Task.NOT_RUN:
					self.conf.end_msg('test cancelled','YELLOW')
				elif self.hasrun!=Task.SUCCESS:
					self.conf.end_msg(self.args.get('errmsg','no'),'YELLOW')
				else:
					self.conf.end_msg(self.args.get('okmsg','yes'),'GREEN')
@conf
def multicheck(self,*k,**kw):
	self.start_msg(kw.get('msg','Executing %d configuration tests'%len(k)),**kw)
	for var in('DEFINES',DEFKEYS):
		self.env.append_value(var,[])
	self.env.DEFINE_COMMENTS=self.env.DEFINE_COMMENTS or{}
	class par(object):
		def __init__(self):
			self.keep=False
			self.task_sigs={}
			self.progress_bar=0
		def total(self):
			return len(tasks)
		def to_log(self,*k,**kw):
			return
	bld=par()
	bld.keep=kw.get('run_all_tests',True)
	bld.imp_sigs={}
	tasks=[]
	id_to_task={}
	for dct in k:
		x=Task.classes['cfgtask'](bld=bld,env=None)
		tasks.append(x)
		x.args=dct
		x.bld=bld
		x.conf=self
		x.args=dct
		x.logger=Logs.make_mem_logger(str(id(x)),self.logger)
		if'id'in dct:
			id_to_task[dct['id']]=x
	for x in tasks:
		for key in Utils.to_list(x.args.get('before_tests',[])):
			tsk=id_to_task[key]
			if not tsk:
				raise ValueError('No test named %r'%key)
			tsk.run_after.add(x)
		for key in Utils.to_list(x.args.get('after_tests',[])):
			tsk=id_to_task[key]
			if not tsk:
				raise ValueError('No test named %r'%key)
			x.run_after.add(tsk)
	def it():
		yield tasks
		while 1:
			yield[]
	bld.producer=p=Runner.Parallel(bld,Options.options.jobs)
	bld.multicheck_lock=Utils.threading.Lock()
	p.biter=it()
	self.end_msg('started')
	p.start()
	for x in tasks:
		x.logger.memhandler.flush()
	self.start_msg('-> processing test results')
	if p.error:
		for x in p.error:
			if getattr(x,'err_msg',None):
				self.to_log(x.err_msg)
				self.end_msg('fail',color='RED')
				raise Errors.WafError('There is an error in the library, read config.log for more information')
	failure_count=0
	for x in tasks:
		if x.hasrun not in(Task.SUCCESS,Task.NOT_RUN):
			failure_count+=1
	if failure_count:
		self.end_msg(kw.get('errmsg','%s test failed'%failure_count),color='YELLOW',**kw)
	else:
		self.end_msg('all ok',**kw)
	for x in tasks:
		if x.hasrun!=Task.SUCCESS:
			if x.args.get('mandatory',True):
				self.fatal(kw.get('fatalmsg')or'One of the tests has failed, read config.log for more information')
@conf
def check_gcc_o_space(self,mode='c'):
	if int(self.env.CC_VERSION[0])>4:
		return
	self.env.stash()
	if mode=='c':
		self.env.CCLNK_TGT_F=['-o','']
	elif mode=='cxx':
		self.env.CXXLNK_TGT_F=['-o','']
	features='%s %sshlib'%(mode,mode)
	try:
		self.check(msg='Checking if the -o link must be split from arguments',fragment=SNIP_EMPTY_PROGRAM,features=features)
	except self.errors.ConfigurationError:
		self.env.revert()
	else:
		self.env.commit()