#!/usr/bin/env python
# encoding: utf-8
# Carlos Rafael Giani, 2006 (dv)
# Tamas Pal, 2007 (folti)
# Nicolas Mercier, 2009
# Matt Clarkson, 2012

"""
Microsoft Visual C++/Intel C++ compiler support

Usage::

	$ waf configure --msvc_version="msvc 10.0,msvc 9.0" --msvc_target="x64"

or::

	def configure(conf):
		conf.env['MSVC_VERSIONS'] = ['msvc 10.0', 'msvc 9.0', 'msvc 8.0', 'msvc 7.1', 'msvc 7.0', 'msvc 6.0', 'wsdk 7.0', 'intel 11', 'PocketPC 9.0', 'Smartphone 8.0']
		conf.env['MSVC_TARGETS'] = ['x64']
		conf.load('msvc')

or::

	def configure(conf):
		conf.load('msvc', funs='no_autodetect')
		conf.check_lib_msvc('gdi32')
		conf.check_libs_msvc('kernel32 user32')
	def build(bld):
		tg = bld.program(source='main.c', target='app', use='KERNEL32 USER32 GDI32')

Platforms and targets will be tested in the order they appear;
the first good configuration will be used.
Supported platforms: ia64, x64, x86, x86_amd64, x86_ia64

Compilers supported:

* msvc       => Visual Studio, versions 6.0 (VC 98, VC .NET 2002) to 11.0 (Visual Studio 2012)
* wsdk       => Windows SDK, versions 6.0, 6.1, 7.0, 7.1, 8.0
* icl        => Intel compiler, versions 9, 10, 11, 13
* winphone   => Visual Studio to target Windows Phone 8 native (version 8.0 for now)
* Smartphone => Compiler/SDK for Smartphone devices (armv4/v4i)
* PocketPC   => Compiler/SDK for PocketPC devices (armv4/v4i)

To use WAF in a VS2008 Make file project (see http://code.google.com/p/waf/issues/detail?id=894)
You may consider to set the environment variable "VS_UNICODE_OUTPUT" to nothing before calling waf.
So in your project settings use something like 'cmd.exe /C "set VS_UNICODE_OUTPUT=& set PYTHONUNBUFFERED=true & waf build"'.
cmd.exe  /C  "chcp 1252 & set PYTHONUNBUFFERED=true && set && waf  configure"
Setting PYTHONUNBUFFERED gives the unbuffered output.
"""

import os, sys, re, tempfile
from waflib import Utils, Task, Logs, Options, Errors
from waflib.Logs import debug, warn
from waflib.TaskGen import after_method, feature

from waflib.Configure import conf
from waflib.Tools import ccroot, c, cxx, ar, winres

g_msvc_systemlibs = '''
aclui activeds ad1 adptif adsiid advapi32 asycfilt authz bhsupp bits bufferoverflowu cabinet
cap certadm certidl ciuuid clusapi comctl32 comdlg32 comsupp comsuppd comsuppw comsuppwd comsvcs
credui crypt32 cryptnet cryptui d3d8thk daouuid dbgeng dbghelp dciman32 ddao35 ddao35d
ddao35u ddao35ud delayimp dhcpcsvc dhcpsapi dlcapi dnsapi dsprop dsuiext dtchelp
faultrep fcachdll fci fdi framedyd framedyn gdi32 gdiplus glauxglu32 gpedit gpmuuid
gtrts32w gtrtst32hlink htmlhelp httpapi icm32 icmui imagehlp imm32 iphlpapi iprop
kernel32 ksguid ksproxy ksuser libcmt libcmtd libcpmt libcpmtd loadperf lz32 mapi
mapi32 mgmtapi minidump mmc mobsync mpr mprapi mqoa mqrt msacm32 mscms mscoree
msdasc msimg32 msrating mstask msvcmrt msvcurt msvcurtd mswsock msxml2 mtx mtxdm
netapi32 nmapinmsupp npptools ntdsapi ntdsbcli ntmsapi ntquery odbc32 odbcbcp
odbccp32 oldnames ole32 oleacc oleaut32 oledb oledlgolepro32 opends60 opengl32
osptk parser pdh penter pgobootrun pgort powrprof psapi ptrustm ptrustmd ptrustu
ptrustud qosname rasapi32 rasdlg rassapi resutils riched20 rpcndr rpcns4 rpcrt4 rtm
rtutils runtmchk scarddlg scrnsave scrnsavw secur32 sensapi setupapi sfc shell32
shfolder shlwapi sisbkup snmpapi sporder srclient sti strsafe svcguid tapi32 thunk32
traffic unicows url urlmon user32 userenv usp10 uuid uxtheme vcomp vcompd vdmdbg
version vfw32 wbemuuid  webpost wiaguid wininet winmm winscard winspool winstrm
wintrust wldap32 wmiutils wow32 ws2_32 wsnmp32 wsock32 wst wtsapi32 xaswitch xolehlp
'''.split()
"""importlibs provided by MSVC/Platform SDK. Do NOT search them"""

all_msvc_platforms = [ ('x64', 'amd64'), ('x86', 'x86'), ('ia64', 'ia64'), ('x86_amd64', 'amd64'), ('x86_ia64', 'ia64'), ('x86_arm', 'arm') ]
"""List of msvc platforms"""

all_wince_platforms = [ ('armv4', 'arm'), ('armv4i', 'arm'), ('mipsii', 'mips'), ('mipsii_fp', 'mips'), ('mipsiv', 'mips'), ('mipsiv_fp', 'mips'), ('sh4', 'sh'), ('x86', 'cex86') ]
"""List of wince platforms"""

all_icl_platforms = [ ('intel64', 'amd64'), ('em64t', 'amd64'), ('ia32', 'x86'), ('Itanium', 'ia64')]
"""List of icl platforms"""

def options(opt):
	opt.add_option('--msvc_version', type='string', help = 'msvc version, eg: "msvc 10.0,msvc 9.0"', default='')
	opt.add_option('--msvc_targets', type='string', help = 'msvc targets, eg: "x64,arm"', default='')

def setup_msvc(conf, versions, arch = False):
	platforms = getattr(Options.options, 'msvc_targets', '').split(',')
	if platforms == ['']:
		platforms=Utils.to_list(conf.env['MSVC_TARGETS']) or [i for i,j in all_msvc_platforms+all_icl_platforms+all_wince_platforms]
	desired_versions = getattr(Options.options, 'msvc_version', '').split(',')
	if desired_versions == ['']:
		desired_versions = conf.env['MSVC_VERSIONS'] or [v for v,_ in versions][::-1]
	versiondict = dict(versions)

	for version in desired_versions:
		try:
			targets = dict(versiondict [version])
			for target in platforms:
				try:
					arch,(p1,p2,p3) = targets[target]
					compiler,revision = version.rsplit(' ', 1)
					if arch:
						return compiler,revision,p1,p2,p3,arch
					else:
						return compiler,revision,p1,p2,p3
				except KeyError: continue
		except KeyError: continue
	conf.fatal('msvc: Impossible to find a valid architecture for building (in setup_msvc)')

@conf
def get_msvc_version(conf, compiler, version, target, vcvars):
	"""
	Create a bat file to obtain the location of the libraries

	:param compiler: ?
	:param version: ?
	:target: ?
	:vcvars: ?
	:return: the location of msvc, the location of include dirs, and the library paths
	:rtype: tuple of strings
	"""
	debug('msvc: get_msvc_version: %r %r %r', compiler, version, target)
	batfile = conf.bldnode.make_node('waf-print-msvc.bat')
	batfile.write("""@echo off
set INCLUDE=
set LIB=
call "%s" %s
echo PATH=%%PATH%%
echo INCLUDE=%%INCLUDE%%
echo LIB=%%LIB%%;%%LIBPATH%%
""" % (vcvars,target))
	sout = conf.cmd_and_log(['cmd', '/E:on', '/V:on', '/C', batfile.abspath()])
	lines = sout.splitlines()

	if not lines[0]:
		lines.pop(0)

	MSVC_PATH = MSVC_INCDIR = MSVC_LIBDIR = None
	for line in lines:
		if line.startswith('PATH='):
			path = line[5:]
			MSVC_PATH = path.split(';')
		elif line.startswith('INCLUDE='):
			MSVC_INCDIR = [i for i in line[8:].split(';') if i]
		elif line.startswith('LIB='):
			MSVC_LIBDIR = [i for i in line[4:].split(';') if i]
	if None in (MSVC_PATH, MSVC_INCDIR, MSVC_LIBDIR):
		conf.fatal('msvc: Could not find a valid architecture for building (get_msvc_version_3)')

	# Check if the compiler is usable at all.
	# The detection may return 64-bit versions even on 32-bit systems, and these would fail to run.
	env = dict(os.environ)
	env.update(PATH = path)
	compiler_name, linker_name, lib_name = _get_prog_names(conf, compiler)
	cxx = conf.find_program(compiler_name, path_list=MSVC_PATH)
	cxx = conf.cmd_to_list(cxx)

	# delete CL if exists. because it could contain parameters wich can change cl's behaviour rather catastrophically.
	if 'CL' in env:
		del(env['CL'])

	try:
		try:
			conf.cmd_and_log(cxx + ['/help'], env=env)
		except Exception as e:
			debug('msvc: get_msvc_version: %r %r %r -> failure' % (compiler, version, target))
			debug(str(e))
			conf.fatal('msvc: cannot run the compiler (in get_msvc_version)')
		else:
			debug('msvc: get_msvc_version: %r %r %r -> OK', compiler, version, target)
	finally:
		conf.env[compiler_name] = ''

	return (MSVC_PATH, MSVC_INCDIR, MSVC_LIBDIR)

@conf
def gather_wsdk_versions(conf, versions):
	"""
	Use winreg to add the msvc versions to the input list

	:param versions: list to modify
	:type versions: list
	"""
	version_pattern = re.compile('^v..?.?\...?.?')
	try:
		all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Wow6432node\\Microsoft\\Microsoft SDKs\\Windows')
	except WindowsError:
		try:
			all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Microsoft\\Microsoft SDKs\\Windows')
		except WindowsError:
			return
	index = 0
	while 1:
		try:
			version = Utils.winreg.EnumKey(all_versions, index)
		except WindowsError:
			break
		index = index + 1
		if not version_pattern.match(version):
			continue
		try:
			msvc_version = Utils.winreg.OpenKey(all_versions, version)
			path,type = Utils.winreg.QueryValueEx(msvc_version,'InstallationFolder')
		except WindowsError:
			continue
		if os.path.isfile(os.path.join(path, 'bin', 'SetEnv.cmd')):
			targets = []
			for target,arch in all_msvc_platforms:
				try:
					targets.append((target, (arch, conf.get_msvc_version('wsdk', version, '/'+target, os.path.join(path, 'bin', 'SetEnv.cmd')))))
				except conf.errors.ConfigurationError:
					pass
			versions.append(('wsdk ' + version[1:], targets))

def gather_wince_supported_platforms():
	"""
	Checks SmartPhones SDKs

	:param versions: list to modify
	:type versions: list
	"""
	supported_wince_platforms = []
	try:
		ce_sdk = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Wow6432node\\Microsoft\\Windows CE Tools\\SDKs')
	except WindowsError:
		try:
			ce_sdk = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Microsoft\\Windows CE Tools\\SDKs')
		except WindowsError:
			ce_sdk = ''
	if not ce_sdk:
		return supported_wince_platforms

	ce_index = 0
	while 1:
		try:
			sdk_device = Utils.winreg.EnumKey(ce_sdk, ce_index)
		except WindowsError:
			break
		ce_index = ce_index + 1
		sdk = Utils.winreg.OpenKey(ce_sdk, sdk_device)
		try:
			path,type = Utils.winreg.QueryValueEx(sdk, 'SDKRootDir')
		except WindowsError:
			try:
				path,type = Utils.winreg.QueryValueEx(sdk,'SDKInformation')
				path,xml = os.path.split(path)
			except WindowsError:
				continue
		path=str(path)
		path,device = os.path.split(path)
		if not device:
			path,device = os.path.split(path)
		for arch,compiler in all_wince_platforms:
			platforms = []
			if os.path.isdir(os.path.join(path, device, 'Lib', arch)):
				platforms.append((arch, compiler, os.path.join(path, device, 'Include', arch), os.path.join(path, device, 'Lib', arch)))
			if platforms:
				supported_wince_platforms.append((device, platforms))
	return supported_wince_platforms

def gather_msvc_detected_versions():
	#Detected MSVC versions!
	version_pattern = re.compile('^(\d\d?\.\d\d?)(Exp)?$')
	detected_versions = []
	for vcver,vcvar in [('VCExpress','Exp'), ('VisualStudio','')]:
		try:
			prefix = 'SOFTWARE\\Wow6432node\\Microsoft\\'+vcver
			all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, prefix)
		except WindowsError:
			try:
				prefix = 'SOFTWARE\\Microsoft\\'+vcver
				all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, prefix)
			except WindowsError:
				continue

		index = 0
		while 1:
			try:
				version = Utils.winreg.EnumKey(all_versions, index)
			except WindowsError:
				break
			index = index + 1
			match = version_pattern.match(version)
			if not match:
				continue
			else:
				versionnumber = float(match.group(1))
			detected_versions.append((versionnumber, version+vcvar, prefix+"\\"+version))
	def fun(tup):
		return tup[0]

	detected_versions.sort(key = fun)
	return detected_versions

@conf
def gather_msvc_targets(conf, versions, version, vc_path):
	#Looking for normal MSVC compilers!
	targets = []
	if os.path.isfile(os.path.join(vc_path, 'vcvarsall.bat')):
		for target,realtarget in all_msvc_platforms[::-1]:
			try:
				targets.append((target, (realtarget, conf.get_msvc_version('msvc', version, target, os.path.join(vc_path, 'vcvarsall.bat')))))
			except conf.errors.ConfigurationError:
				pass
	elif os.path.isfile(os.path.join(vc_path, 'Common7', 'Tools', 'vsvars32.bat')):
		try:
			targets.append(('x86', ('x86', conf.get_msvc_version('msvc', version, 'x86', os.path.join(vc_path, 'Common7', 'Tools', 'vsvars32.bat')))))
		except conf.errors.ConfigurationError:
			pass
	elif os.path.isfile(os.path.join(vc_path, 'Bin', 'vcvars32.bat')):
		try:
			targets.append(('x86', ('x86', conf.get_msvc_version('msvc', version, '', os.path.join(vc_path, 'Bin', 'vcvars32.bat')))))
		except conf.errors.ConfigurationError:
			pass
	if targets:
		versions.append(('msvc '+ version, targets))

@conf
def gather_wince_targets(conf, versions, version, vc_path, vsvars, supported_platforms):
	#Looking for Win CE compilers!
	for device,platforms in supported_platforms:
		cetargets = []
		for platform,compiler,include,lib in platforms:
			winCEpath = os.path.join(vc_path, 'ce')
			if not os.path.isdir(winCEpath):
				continue
			try:
				common_bindirs,_1,_2 = conf.get_msvc_version('msvc', version, 'x86', vsvars)
			except conf.errors.ConfigurationError:
				continue
			if os.path.isdir(os.path.join(winCEpath, 'lib', platform)):
				bindirs = [os.path.join(winCEpath, 'bin', compiler), os.path.join(winCEpath, 'bin', 'x86_'+compiler)] + common_bindirs
				incdirs = [os.path.join(winCEpath, 'include'), os.path.join(winCEpath, 'atlmfc', 'include'), include]
				libdirs = [os.path.join(winCEpath, 'lib', platform), os.path.join(winCEpath, 'atlmfc', 'lib', platform), lib]
				cetargets.append((platform, (platform, (bindirs,incdirs,libdirs))))
		if cetargets:
			versions.append((device + ' ' + version, cetargets))

@conf
def gather_winphone_targets(conf, versions, version, vc_path, vsvars):
	#Looking for WinPhone compilers
	targets = []
	for target,realtarget in all_msvc_platforms[::-1]:
		try:
			targets.append((target, (realtarget, conf.get_msvc_version('winphone', version, target, vsvars))))
		except conf.errors.ConfigurationError as e:
			pass
	if targets:
		versions.append(('winphone '+ version, targets))

@conf
def gather_msvc_versions(conf, versions):
	vc_paths = []
	for (v,version,reg) in gather_msvc_detected_versions():
		try:
			try:
				msvc_version = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, reg + "\\Setup\\VC")
			except WindowsError:
				msvc_version = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, reg + "\\Setup\\Microsoft Visual C++")
			path,type = Utils.winreg.QueryValueEx(msvc_version, 'ProductDir')
			vc_paths.append((version, os.path.abspath(str(path))))
		except WindowsError:
			continue

	wince_supported_platforms = gather_wince_supported_platforms()

	for version,vc_path in vc_paths:
		vs_path = os.path.dirname(vc_path)
		vsvars = os.path.join(vs_path, 'Common7', 'Tools', 'vsvars32.bat')
		if wince_supported_platforms and os.path.isfile(vsvars):
			conf.gather_wince_targets(versions, version, vc_path, vsvars, wince_supported_platforms)

		vsvars = os.path.join(vs_path, 'VC', 'WPSDK', 'WP80', 'vcvarsphoneall.bat')
		if os.path.isfile(vsvars):
			conf.gather_winphone_targets(versions, '8.0', vc_path, vsvars)

	for version,vc_path in vc_paths:
		vs_path = os.path.dirname(vc_path)
		conf.gather_msvc_targets(versions, version, vc_path)

@conf
def gather_icl_versions(conf, versions):
	"""
	Checks ICL compilers

	:param versions: list to modify
	:type versions: list
	"""
	version_pattern = re.compile('^...?.?\....?.?')
	try:
		all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Wow6432node\\Intel\\Compilers\\C++')
	except WindowsError:
		try:
			all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Intel\\Compilers\\C++')
		except WindowsError:
			return
	index = 0
	while 1:
		try:
			version = Utils.winreg.EnumKey(all_versions, index)
		except WindowsError:
			break
		index = index + 1
		if not version_pattern.match(version):
			continue
		targets = []
		for target,arch in all_icl_platforms:
			try:
				if target=='intel64': targetDir='EM64T_NATIVE'
				else: targetDir=target
				Utils.winreg.OpenKey(all_versions,version+'\\'+targetDir)
				icl_version=Utils.winreg.OpenKey(all_versions,version)
				path,type=Utils.winreg.QueryValueEx(icl_version,'ProductDir')
				batch_file=os.path.join(path,'bin','iclvars.bat')
				if os.path.isfile(batch_file):
					try:
						targets.append((target,(arch,conf.get_msvc_version('intel',version,target,batch_file))))
					except conf.errors.ConfigurationError:
						pass
			except WindowsError:
				pass
		for target,arch in all_icl_platforms:
			try:
				icl_version = Utils.winreg.OpenKey(all_versions, version+'\\'+target)
				path,type = Utils.winreg.QueryValueEx(icl_version,'ProductDir')
				batch_file=os.path.join(path,'bin','iclvars.bat')
				if os.path.isfile(batch_file):
					try:
						targets.append((target, (arch, conf.get_msvc_version('intel', version, target, batch_file))))
					except conf.errors.ConfigurationError:
						pass
			except WindowsError:
				continue
		major = version[0:2]
		versions.append(('intel ' + major, targets))

@conf
def gather_intel_composer_versions(conf, versions):
	"""
	Checks ICL compilers that are part of Intel Composer Suites

	:param versions: list to modify
	:type versions: list
	"""
	version_pattern = re.compile('^...?.?\...?.?.?')
	try:
		all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Wow6432node\\Intel\\Suites')
	except WindowsError:
		try:
			all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Intel\\Suites')
		except WindowsError:
			return
	index = 0
	while 1:
		try:
			version = Utils.winreg.EnumKey(all_versions, index)
		except WindowsError:
			break
		index = index + 1
		if not version_pattern.match(version):
			continue
		targets = []
		for target,arch in all_icl_platforms:
			try:
				if target=='intel64': targetDir='EM64T_NATIVE'
				else: targetDir=target
				try:
					defaults = Utils.winreg.OpenKey(all_versions,version+'\\Defaults\\C++\\'+targetDir)
				except WindowsError:
					if targetDir=='EM64T_NATIVE':
						defaults = Utils.winreg.OpenKey(all_versions,version+'\\Defaults\\C++\\EM64T')
					else:
						raise WindowsError
				uid,type = Utils.winreg.QueryValueEx(defaults, 'SubKey')
				Utils.winreg.OpenKey(all_versions,version+'\\'+uid+'\\C++\\'+targetDir)
				icl_version=Utils.winreg.OpenKey(all_versions,version+'\\'+uid+'\\C++')
				path,type=Utils.winreg.QueryValueEx(icl_version,'ProductDir')
				batch_file=os.path.join(path,'bin','iclvars.bat')
				if os.path.isfile(batch_file):
					try:
						targets.append((target,(arch,conf.get_msvc_version('intel',version,target,batch_file))))
					except conf.errors.ConfigurationError as e:
						pass
				# The intel compilervar_arch.bat is broken when used with Visual Studio Express 2012
				# http://software.intel.com/en-us/forums/topic/328487
				compilervars_warning_attr = '_compilervars_warning_key'
				if version[0:2] == '13' and getattr(conf, compilervars_warning_attr, True):
					setattr(conf, compilervars_warning_attr, False)
					patch_url = 'http://software.intel.com/en-us/forums/topic/328487'
					compilervars_arch = os.path.join(path, 'bin', 'compilervars_arch.bat')
					for vscomntools in ['VS110COMNTOOLS', 'VS100COMNTOOLS']:
						if os.environ.has_key (vscomntools):
							vs_express_path = os.environ[vscomntools] + r'..\IDE\VSWinExpress.exe'
							dev_env_path = os.environ[vscomntools] + r'..\IDE\devenv.exe'
							if (r'if exist "%VS110COMNTOOLS%..\IDE\VSWinExpress.exe"' in Utils.readf(compilervars_arch) and
								not os.path.exists(vs_express_path) and not os.path.exists(dev_env_path)):
								Logs.warn(('The Intel compilervar_arch.bat only checks for one Visual Studio SKU '
								           '(VSWinExpress.exe) but it does not seem to be installed at %r. '
								           'The intel command line set up will fail to configure unless the file %r'
								           'is patched. See: %s') % (vs_express_path, compilervars_arch, patch_url))
			except WindowsError:
				pass
		major = version[0:2]
		versions.append(('intel ' + major, targets))

@conf
def get_msvc_versions(conf):
	"""
	:return: list of compilers installed
	:rtype: list of string
	"""
	if not conf.env['MSVC_INSTALLED_VERSIONS']:
		lst = []
		conf.gather_icl_versions(lst)
		conf.gather_intel_composer_versions(lst)
		conf.gather_wsdk_versions(lst)
		conf.gather_msvc_versions(lst)
		conf.env['MSVC_INSTALLED_VERSIONS'] = lst
	return conf.env['MSVC_INSTALLED_VERSIONS']

@conf
def print_all_msvc_detected(conf):
	"""
	Print the contents of *conf.env.MSVC_INSTALLED_VERSIONS*
	"""
	for version,targets in conf.env['MSVC_INSTALLED_VERSIONS']:
		Logs.info(version)
		for target,l in targets:
			Logs.info("\t"+target)

@conf
def detect_msvc(conf, arch = False):
	versions = get_msvc_versions(conf)
	return setup_msvc(conf, versions, arch)

@conf
def find_lt_names_msvc(self, libname, is_static=False):
	"""
	Win32/MSVC specific code to glean out information from libtool la files.
	this function is not attached to the task_gen class
	"""
	lt_names=[
		'lib%s.la' % libname,
		'%s.la' % libname,
	]

	for path in self.env['LIBPATH']:
		for la in lt_names:
			laf=os.path.join(path,la)
			dll=None
			if os.path.exists(laf):
				ltdict = Utils.read_la_file(laf)
				lt_libdir=None
				if ltdict.get('libdir', ''):
					lt_libdir = ltdict['libdir']
				if not is_static and ltdict.get('library_names', ''):
					dllnames=ltdict['library_names'].split()
					dll=dllnames[0].lower()
					dll=re.sub('\.dll$', '', dll)
					return (lt_libdir, dll, False)
				elif ltdict.get('old_library', ''):
					olib=ltdict['old_library']
					if os.path.exists(os.path.join(path,olib)):
						return (path, olib, True)
					elif lt_libdir != '' and os.path.exists(os.path.join(lt_libdir,olib)):
						return (lt_libdir, olib, True)
					else:
						return (None, olib, True)
				else:
					raise self.errors.WafError('invalid libtool object file: %s' % laf)
	return (None, None, None)

@conf
def libname_msvc(self, libname, is_static=False):
	lib = libname.lower()
	lib = re.sub('\.lib$','',lib)

	if lib in g_msvc_systemlibs:
		return lib

	lib=re.sub('^lib','',lib)

	if lib == 'm':
		return None

	(lt_path, lt_libname, lt_static) = self.find_lt_names_msvc(lib, is_static)

	if lt_path != None and lt_libname != None:
		if lt_static == True:
			# file existance check has been made by find_lt_names
			return os.path.join(lt_path,lt_libname)

	if lt_path != None:
		_libpaths=[lt_path] + self.env['LIBPATH']
	else:
		_libpaths=self.env['LIBPATH']

	static_libs=[
		'lib%ss.lib' % lib,
		'lib%s.lib' % lib,
		'%ss.lib' % lib,
		'%s.lib' %lib,
		]

	dynamic_libs=[
		'lib%s.dll.lib' % lib,
		'lib%s.dll.a' % lib,
		'%s.dll.lib' % lib,
		'%s.dll.a' % lib,
		'lib%s_d.lib' % lib,
		'%s_d.lib' % lib,
		'%s.lib' %lib,
		]

	libnames=static_libs
	if not is_static:
		libnames=dynamic_libs + static_libs

	for path in _libpaths:
		for libn in libnames:
			if os.path.exists(os.path.join(path, libn)):
				debug('msvc: lib found: %s' % os.path.join(path,libn))
				return re.sub('\.lib$', '',libn)

	#if no lib can be found, just return the libname as msvc expects it
	self.fatal("The library %r could not be found" % libname)
	return re.sub('\.lib$', '', libname)

@conf
def check_lib_msvc(self, libname, is_static=False, uselib_store=None):
	"""
	Ideally we should be able to place the lib in the right env var, either STLIB or LIB,
	but we don't distinguish static libs from shared libs.
	This is ok since msvc doesn't have any special linker flag to select static libs (no env['STLIB_MARKER'])
	"""
	libn = self.libname_msvc(libname, is_static)

	if not uselib_store:
		uselib_store = libname.upper()

	if False and is_static: # disabled
		self.env['STLIB_' + uselib_store] = [libn]
	else:
		self.env['LIB_' + uselib_store] = [libn]

@conf
def check_libs_msvc(self, libnames, is_static=False):
	for libname in Utils.to_list(libnames):
		self.check_lib_msvc(libname, is_static)

def configure(conf):
	"""
	Configuration methods to call for detecting msvc
	"""
	conf.autodetect(True)
	conf.find_msvc()
	conf.msvc_common_flags()
	conf.cc_load_tools()
	conf.cxx_load_tools()
	conf.cc_add_flags()
	conf.cxx_add_flags()
	conf.link_add_flags()
	conf.visual_studio_add_flags()

@conf
def no_autodetect(conf):
	conf.env.NO_MSVC_DETECT = 1
	configure(conf)

@conf
def autodetect(conf, arch = False):
	v = conf.env
	if v.NO_MSVC_DETECT:
		return
	if arch:
		compiler, version, path, includes, libdirs, arch = conf.detect_msvc(True)
		v['DEST_CPU'] = arch
	else:
		compiler, version, path, includes, libdirs = conf.detect_msvc()

	v['PATH'] = path
	v['INCLUDES'] = includes
	v['LIBPATH'] = libdirs
	v['MSVC_COMPILER'] = compiler
	try:
		v['MSVC_VERSION'] = float(version)
	except Exception:
		v['MSVC_VERSION'] = float(version[:-3])

def _get_prog_names(conf, compiler):
	if compiler=='intel':
		compiler_name = 'ICL'
		linker_name = 'XILINK'
		lib_name = 'XILIB'
	else:
		# assumes CL.exe
		compiler_name = 'CL'
		linker_name = 'LINK'
		lib_name = 'LIB'
	return compiler_name, linker_name, lib_name

@conf
def find_msvc(conf):
	"""Due to path format limitations, limit operation only to native Win32. Yeah it sucks."""
	if sys.platform == 'cygwin':
		conf.fatal('MSVC module does not work under cygwin Python!')

	# the autodetection is supposed to be performed before entering in this method
	v = conf.env
	path = v['PATH']
	compiler = v['MSVC_COMPILER']
	version = v['MSVC_VERSION']

	compiler_name, linker_name, lib_name = _get_prog_names(conf, compiler)
	v.MSVC_MANIFEST = (compiler == 'msvc' and version >= 8) or (compiler == 'wsdk' and version >= 6) or (compiler == 'intel' and version >= 11)

	# compiler
	cxx = None
	if v['CXX']: cxx = v['CXX']
	elif 'CXX' in conf.environ: cxx = conf.environ['CXX']
	cxx = conf.find_program(compiler_name, var='CXX', path_list=path)
	cxx = conf.cmd_to_list(cxx)

	# before setting anything, check if the compiler is really msvc
	env = dict(conf.environ)
	if path: env.update(PATH = ';'.join(path))
	if not conf.cmd_and_log(cxx + ['/nologo', '/help'], env=env):
		conf.fatal('the msvc compiler could not be identified')

	# c/c++ compiler
	v['CC'] = v['CXX'] = cxx
	v['CC_NAME'] = v['CXX_NAME'] = 'msvc'

	# linker
	if not v['LINK_CXX']:
		link = conf.find_program(linker_name, path_list=path)
		if link: v['LINK_CXX'] = link
		else: conf.fatal('%s was not found (linker)' % linker_name)
		v['LINK'] = link

	if not v['LINK_CC']:
		v['LINK_CC'] = v['LINK_CXX']

	# staticlib linker
	if not v['AR']:
		stliblink = conf.find_program(lib_name, path_list=path, var='AR')
		if not stliblink: return
		v['ARFLAGS'] = ['/NOLOGO']

	# manifest tool. Not required for VS 2003 and below. Must have for VS 2005 and later
	if v.MSVC_MANIFEST:
		conf.find_program('MT', path_list=path, var='MT')
		v['MTFLAGS'] = ['/NOLOGO']

	try:
		conf.load('winres')
	except Errors.WafError:
		warn('Resource compiler not found. Compiling resource file is disabled')

@conf
def visual_studio_add_flags(self):
	"""visual studio flags found in the system environment"""
	v = self.env
	try: v.prepend_value('INCLUDES', [x for x in self.environ['INCLUDE'].split(';') if x]) # notice the 'S'
	except Exception: pass
	try: v.prepend_value('LIBPATH', [x for x in self.environ['LIB'].split(';') if x])
	except Exception: pass

@conf
def msvc_common_flags(conf):
	"""
	Setup the flags required for executing the msvc compiler
	"""
	v = conf.env

	v['DEST_BINFMT'] = 'pe'
	v.append_value('CFLAGS', ['/nologo'])
	v.append_value('CXXFLAGS', ['/nologo'])
	v['DEFINES_ST']     = '/D%s'

	v['CC_SRC_F']     = ''
	v['CC_TGT_F']     = ['/c', '/Fo']
	if v['MSVC_VERSION'] >= 8:
		v['CC_TGT_F']= ['/FC'] + v['CC_TGT_F']
	v['CXX_SRC_F']    = ''
	v['CXX_TGT_F']    = ['/c', '/Fo']
	if v['MSVC_VERSION'] >= 8:
		v['CXX_TGT_F']= ['/FC'] + v['CXX_TGT_F']

	v['CPPPATH_ST']   = '/I%s' # template for adding include paths

	v['AR_TGT_F'] = v['CCLNK_TGT_F'] = v['CXXLNK_TGT_F'] = '/OUT:'

	# Subsystem specific flags
	v['CFLAGS_CONSOLE']   = v['CXXFLAGS_CONSOLE']   = ['/SUBSYSTEM:CONSOLE']
	v['CFLAGS_NATIVE']    = v['CXXFLAGS_NATIVE']    = ['/SUBSYSTEM:NATIVE']
	v['CFLAGS_POSIX']     = v['CXXFLAGS_POSIX']     = ['/SUBSYSTEM:POSIX']
	v['CFLAGS_WINDOWS']   = v['CXXFLAGS_WINDOWS']   = ['/SUBSYSTEM:WINDOWS']
	v['CFLAGS_WINDOWSCE'] = v['CXXFLAGS_WINDOWSCE'] = ['/SUBSYSTEM:WINDOWSCE']