"""distutils.msvccompiler
Contains MSVCCompiler, an implementation of the abstract CCompiler class
for the Microsoft Visual Studio.
"""
# Written by Perry Stoll
# hacked by Robin Becker and Thomas Heller to do a better job of
# finding DevStudio (through the registry)
import sys, os
from distutils.errors import DistutilsPlatformError
from distutils.ccompiler import CCompiler
from distutils import log
_can_read_reg = False
try:
import winreg
_can_read_reg = True
hkey_mod = winreg
RegOpenKeyEx = winreg.OpenKeyEx
RegEnumKey = winreg.EnumKey
RegEnumValue = winreg.EnumValue
RegError = winreg.error
except ImportError:
try:
import win32api
import win32con
_can_read_reg = True
hkey_mod = win32con
RegOpenKeyEx = win32api.RegOpenKeyEx
RegEnumKey = win32api.RegEnumKey
RegEnumValue = win32api.RegEnumValue
RegError = win32api.error
except ImportError:
log.info("Warning: Can't read registry to find the "
"necessary compiler setting\n"
"Make sure that Python modules winreg, "
"win32api or win32con are installed.")
if _can_read_reg:
HKEYS = (hkey_mod.HKEY_USERS,
hkey_mod.HKEY_CURRENT_USER,
hkey_mod.HKEY_LOCAL_MACHINE,
hkey_mod.HKEY_CLASSES_ROOT)
def read_keys(base, key):
"""Return list of registry keys."""
try:
handle = RegOpenKeyEx(base, key)
except RegError:
return None
L = []
i = 0
while True:
try:
k = RegEnumKey(handle, i)
except RegError:
break
L.append(k)
i += 1
return L
def read_values(base, key):
"""Return dict of registry keys and values.
All names are converted to lowercase.
"""
try:
handle = RegOpenKeyEx(base, key)
except RegError:
return None
d = {}
i = 0
while True:
try:
name, value, type = RegEnumValue(handle, i)
except RegError:
break
name = name.lower()
d[convert_mbcs(name)] = convert_mbcs(value)
i += 1
return d
def convert_mbcs(s):
dec = getattr(s, "decode", None)
if dec is not None:
try:
s = dec("mbcs")
except UnicodeError:
pass
return s
class MacroExpander:
def __init__(self, version):
self.macros = {}
self.load_macros(version)
def set_macro(self, macro, path, key):
for base in HKEYS:
d = read_values(base, path)
if d:
self.macros["$(%s)" % macro] = d[key]
break
def load_macros(self, version):
vsbase = r"Software\Microsoft\VisualStudio\%0.1f" % version
self.set_macro("VCInstallDir", vsbase + r"\Setup\VC", "productdir")
self.set_macro("VSInstallDir", vsbase + r"\Setup\VS", "productdir")
net = r"Software\Microsoft\.NETFramework"
self.set_macro("FrameworkDir", net, "installroot")
try:
if version > 7.0:
self.set_macro("FrameworkSDKDir", net, "sdkinstallrootv1.1")
else:
self.set_macro("FrameworkSDKDir", net, "sdkinstallroot")
except KeyError as exc: #
raise DistutilsPlatformError(
"""Python was built with Visual Studio 2003;
extensions must be built with a compiler than can generate compatible binaries.
Visual Studio 2003 was not found on this system. If you have Cygwin installed,
you can try compiling with MingW32, by passing "-c mingw32" to setup.py.""")
p = r"Software\Microsoft\NET Framework Setup\Product"
for base in HKEYS:
try:
h = RegOpenKeyEx(base, p)
except RegError:
continue
key = RegEnumKey(h, 0)
d = read_values(base, r"%s\%s" % (p, key))
self.macros["$(FrameworkVersion)"] = d["version"]
def sub(self, s):
for k, v in self.macros.items():
s = s.replace(k, v)
return s
def get_build_version():
"""Return the version of MSVC that was used to build Python.
For Python 2.3 and up, the version number is included in
sys.version. For earlier versions, assume the compiler is MSVC 6.
"""
prefix = "MSC v."
i = sys.version.find(prefix)
if i == -1:
return 6
i = i + len(prefix)
s, rest = sys.version[i:].split(" ", 1)
majorVersion = int(s[:-2]) - 6
if majorVersion >= 13:
# v13 was skipped and should be v14
majorVersion += 1
minorVersion = int(s[2:3]) / 10.0
# I don't think paths are affected by minor version in version 6
if majorVersion == 6:
minorVersion = 0
if majorVersion >= 6:
return majorVersion + minorVersion
# else we don't know what version of the compiler this is
return None
def get_build_architecture():
"""Return the processor architecture.
Possible results are "Intel" or "AMD64".
"""
prefix = " bit ("
i = sys.version.find(prefix)
if i == -1:
return "Intel"
j = sys.version.find(")", i)
return sys.version[i+len(prefix):j]
def normalize_and_reduce_paths(paths):
"""Return a list of normalized paths with duplicates removed.
The current order of paths is maintained.
"""
# Paths are normalized so things like: /a and /a/ aren't both preserved.
reduced_paths = []
for p in paths:
np = os.path.normpath(p)
# XXX(nnorwitz): O(n**2), if reduced_paths gets long perhaps use a set.
if np not in reduced_paths:
reduced_paths.append(np)
return reduced_paths
class MSVCCompiler(CCompiler) :
"""Concrete class that implements an interface to Microsoft Visual C++,
as defined by the CCompiler abstract class."""
compiler_type = 'msvc'
# Just set this so CCompiler's constructor doesn't barf. We currently
# don't use the 'set_executables()' bureaucracy provided by CCompiler,
# as it really isn't necessary for this sort of single-compiler class.
# Would be nice to have a consistent interface with UnixCCompiler,
# though, so it's worth thinking about.
executables = {}
# Private class data (need to distinguish C from C++ source for compiler)
_c_extensions = ['.c']
_cpp_extensions = ['.cc', '.cpp', '.cxx']
_rc_extensions = ['.rc']
_mc_extensions = ['.mc']
# Needed for the filename generation methods provided by the
# base class, CCompiler.
src_extensions = (_c_extensions + _cpp_extensions +
_rc_extensions + _mc_extensions)
res_extension = '.res'
obj_extension = '.obj'
static_lib_extension = '.lib'
shared_lib_extension = '.dll'
static_lib_format = shared_lib_format = '%s%s'
exe_extension = '.exe'
def __init__(self, verbose=0, dry_run=0, force=0):
CCompiler.__init__ (self, verbose, dry_run, force)
self.__version = get_build_version()
self.__arch = get_build_architecture()
if self.__arch == "Intel":
# x86
if self.__version >= 7:
self.__root = r"Software\Microsoft\VisualStudio"
self.__macros = MacroExpander(self.__version)
else:
self.__root = r"Software\Microsoft\Devstudio"
self.__product = "Visual Studio version %s" % self.__version
else:
# Win64. Assume this was built with the platform SDK
self.__product = "Microsoft SDK compiler %s" % (self.__version + 6)
self.initialized = False
# -- Miscellaneous methods -----------------------------------------
# Helper methods for using the MSVC registry settings
def find_exe(self, exe):
"""Return path to an MSVC executable program.
Tries to find the program in several places: first, one of the
MSVC program search paths from the registry; next, the directories
in the PATH environment variable. If any of those work, return an
absolute path that is known to exist. If none of them work, just
return the original program name, 'exe'.
"""
for p in self.__paths:
fn = os.path.join(os.path.abspath(p), exe)
if os.path.isfile(fn):
return fn
# didn't find it; try existing path
for p in os.environ['Path'].split(';'):
fn = os.path.join(os.path.abspath(p),exe)
if os.path.isfile(fn):
return fn
return exe
def get_msvc_paths(self, path, platform='x86'):
"""Get a list of devstudio directories (include, lib or path).
Return a list of strings. The list will be empty if unable to
access the registry or appropriate registry keys not found.
"""
if not _can_read_reg:
return []
path = path + " dirs"
if self.__version >= 7:
key = (r"%s\%0.1f\VC\VC_OBJECTS_PLATFORM_INFO\Win32\Directories"
% (self.__root, self.__version))
else:
key = (r"%s\6.0\Build System\Components\Platforms"
r"\Win32 (%s)\Directories" % (self.__root, platform))
for base in HKEYS:
d = read_values(base, key)
if d:
if self.__version >= 7:
return self.__macros.sub(d[path]).split(";")
else:
return d[path].split(";")
# MSVC 6 seems to create the registry entries we need only when
# the GUI is run.
if self.__version == 6:
for base in HKEYS:
if read_values(base, r"%s\6.0" % self.__root) is not None:
self.warn("It seems you have Visual Studio 6 installed, "
"but the expected registry settings are not present.\n"
"You must at least run the Visual Studio GUI once "
"so that these entries are created.")
break
return []
def set_path_env_var(self, name):
"""Set environment variable 'name' to an MSVC path type value.
This is equivalent to a SET command prior to execution of spawned
commands.
"""
if name == "lib":
p = self.get_msvc_paths("library")
else:
p = self.get_msvc_paths(name)
if p:
os.environ[name] = ';'.join(p)
if get_build_version() >= 8.0:
log.debug("Importing new compiler from distutils.msvc9compiler")
OldMSVCCompiler = MSVCCompiler
from distutils.msvc9compiler import MSVCCompiler
# get_build_architecture not really relevant now we support cross-compile
from distutils.msvc9compiler import MacroExpander
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