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"""
Support code for building Python extensions on Windows.
# NT stuff
# 1. Make sure libpython<version>.a exists for gcc. If not, build it.
# 2. Force windows to use gcc (we're struggling with MSVC and g77 support)
# 3. Force windows to use g77
"""
import os
import subprocess
import sys
import log
import subprocess
import re
# Overwrite certain distutils.ccompiler functions:
import numpy.distutils.ccompiler
# NT stuff
# 1. Make sure libpython<version>.a exists for gcc. If not, build it.
# 2. Force windows to use gcc (we're struggling with MSVC and g77 support)
# --> this is done in numpy/distutils/ccompiler.py
# 3. Force windows to use g77
import distutils.cygwinccompiler
from distutils.version import StrictVersion
from numpy.distutils.ccompiler import gen_preprocess_options, gen_lib_options
from distutils.errors import DistutilsExecError, CompileError, UnknownFileError
from distutils.unixccompiler import UnixCCompiler
from distutils.msvccompiler import get_build_version as get_build_msvc_version
from numpy.distutils.misc_util import msvc_runtime_library, get_build_architecture
# Useful to generate table of symbols from a dll
_START = re.compile(r'\[Ordinal/Name Pointer\] Table')
_TABLE = re.compile(r'^\s+\[([\s*[0-9]*)\] ([a-zA-Z0-9_]*)')
# the same as cygwin plus some additional parameters
class Mingw32CCompiler(distutils.cygwinccompiler.CygwinCCompiler):
""" A modified MingW32 compiler compatible with an MSVC built Python.
"""
compiler_type = 'mingw32'
def __init__ (self,
verbose=0,
dry_run=0,
force=0):
distutils.cygwinccompiler.CygwinCCompiler.__init__ (self,
verbose,dry_run, force)
# we need to support 3.2 which doesn't match the standard
# get_versions methods regex
if self.gcc_version is None:
import re
p = subprocess.Popen(['gcc', '-dumpversion'], shell=True,
stdout=subprocess.PIPE)
out_string = p.stdout.read()
p.stdout.close()
result = re.search('(\d+\.\d+)',out_string)
if result:
self.gcc_version = StrictVersion(result.group(1))
# A real mingw32 doesn't need to specify a different entry point,
# but cygwin 2.91.57 in no-cygwin-mode needs it.
if self.gcc_version <= "2.91.57":
entry_point = '--entry _DllMain@12'
else:
entry_point = ''
if self.linker_dll == 'dllwrap':
# Commented out '--driver-name g++' part that fixes weird
# g++.exe: g++: No such file or directory
# error (mingw 1.0 in Enthon24 tree, gcc-3.4.5).
# If the --driver-name part is required for some environment
# then make the inclusion of this part specific to that environment.
self.linker = 'dllwrap' # --driver-name g++'
elif self.linker_dll == 'gcc':
self.linker = 'g++'
# **changes: eric jones 4/11/01
# 1. Check for import library on Windows. Build if it doesn't exist.
build_import_library()
# **changes: eric jones 4/11/01
# 2. increased optimization and turned off all warnings
# 3. also added --driver-name g++
#self.set_executables(compiler='gcc -mno-cygwin -O2 -w',
# compiler_so='gcc -mno-cygwin -mdll -O2 -w',
# linker_exe='gcc -mno-cygwin',
# linker_so='%s --driver-name g++ -mno-cygwin -mdll -static %s'
# % (self.linker, entry_point))
# MS_WIN64 should be defined when building for amd64 on windows, but
# python headers define it only for MS compilers, which has all kind of
# bad consequences, like using Py_ModuleInit4 instead of
# Py_ModuleInit4_64, etc... So we add it here
if get_build_architecture() == 'AMD64':
self.set_executables(
compiler='gcc -g -DDEBUG -DMS_WIN64 -mno-cygwin -O0 -Wall',
compiler_so='gcc -g -DDEBUG -DMS_WIN64 -mno-cygwin -O0 -Wall -Wstrict-prototypes',
linker_exe='gcc -g -mno-cygwin',
linker_so='gcc -g -mno-cygwin -shared')
else:
if self.gcc_version <= "3.0.0":
self.set_executables(compiler='gcc -mno-cygwin -O2 -w',
compiler_so='gcc -mno-cygwin -mdll -O2 -w -Wstrict-prototypes',
linker_exe='g++ -mno-cygwin',
linker_so='%s -mno-cygwin -mdll -static %s'
% (self.linker, entry_point))
else:
self.set_executables(compiler='gcc -mno-cygwin -O2 -Wall',
compiler_so='gcc -mno-cygwin -O2 -Wall -Wstrict-prototypes',
linker_exe='g++ -mno-cygwin',
linker_so='g++ -mno-cygwin -shared')
# added for python2.3 support
# we can't pass it through set_executables because pre 2.2 would fail
self.compiler_cxx = ['g++']
# Maybe we should also append -mthreads, but then the finished
# dlls need another dll (mingwm10.dll see Mingw32 docs)
# (-mthreads: Support thread-safe exception handling on `Mingw32')
# no additional libraries needed
#self.dll_libraries=[]
return
# __init__ ()
def link(self,
target_desc,
objects,
output_filename,
output_dir,
libraries,
library_dirs,
runtime_library_dirs,
export_symbols = None,
debug=0,
extra_preargs=None,
extra_postargs=None,
build_temp=None,
target_lang=None):
# Include the appropiate MSVC runtime library if Python was built
# with MSVC >= 7.0 (MinGW standard is msvcrt)
runtime_library = msvc_runtime_library()
if runtime_library:
if not libraries:
libraries = []
libraries.append(runtime_library)
args = (self,
target_desc,
objects,
output_filename,
output_dir,
libraries,
library_dirs,
runtime_library_dirs,
None, #export_symbols, we do this in our def-file
debug,
extra_preargs,
extra_postargs,
build_temp,
target_lang)
if self.gcc_version < "3.0.0":
func = distutils.cygwinccompiler.CygwinCCompiler.link
else:
func = UnixCCompiler.link
func(*args[:func.im_func.func_code.co_argcount])
return
def object_filenames (self,
source_filenames,
strip_dir=0,
output_dir=''):
if output_dir is None: output_dir = ''
obj_names = []
for src_name in source_filenames:
# use normcase to make sure '.rc' is really '.rc' and not '.RC'
(base, ext) = os.path.splitext (os.path.normcase(src_name))
# added these lines to strip off windows drive letters
# without it, .o files are placed next to .c files
# instead of the build directory
drv,base = os.path.splitdrive(base)
if drv:
base = base[1:]
if ext not in (self.src_extensions + ['.rc','.res']):
raise UnknownFileError, \
"unknown file type '%s' (from '%s')" % \
(ext, src_name)
if strip_dir:
base = os.path.basename (base)
if ext == '.res' or ext == '.rc':
# these need to be compiled to object files
obj_names.append (os.path.join (output_dir,
base + ext + self.obj_extension))
else:
obj_names.append (os.path.join (output_dir,
base + self.obj_extension))
return obj_names
# object_filenames ()
def find_python_dll():
maj, min, micro = [int(i) for i in sys.version_info[:3]]
dllname = 'python%d%d.dll' % (maj, min)
print "Looking for %s" % dllname
# We can't do much here:
# - find it in python main dir
# - in system32,
# - ortherwise (Sxs), I don't know how to get it.
lib_dirs = []
lib_dirs.append(os.path.join(sys.prefix, 'lib'))
try:
lib_dirs.append(os.path.join(os.environ['SYSTEMROOT'], 'system32'))
except KeyError:
pass
for d in lib_dirs:
dll = os.path.join(d, dllname)
if os.path.exists(dll):
return dll
raise ValueError("%s not found in %s" % (dllname, lib_dirs))
def dump_table(dll):
st = subprocess.Popen(["objdump.exe", "-p", dll], stdout=subprocess.PIPE)
return st.stdout.readlines()
def generate_def(dll, dfile):
"""Given a dll file location, get all its exported symbols and dump them
into the given def file.
The .def file will be overwritten"""
dump = dump_table(dll)
for i in range(len(dump)):
if _START.match(dump[i]):
break
if i == len(dump):
raise ValueError("Symbol table not found")
syms = []
for j in range(i+1, len(dump)):
m = _TABLE.match(dump[j])
if m:
syms.append((int(m.group(1).strip()), m.group(2)))
else:
break
if len(syms) == 0:
log.warn('No symbols found in %s' % dll)
d = open(dfile, 'w')
d.write('LIBRARY %s\n' % os.path.basename(dll))
d.write(';CODE PRELOAD MOVEABLE DISCARDABLE\n')
d.write(';DATA PRELOAD SINGLE\n')
d.write('\nEXPORTS\n')
for s in syms:
#d.write('@%d %s\n' % (s[0], s[1]))
d.write('%s\n' % s[1])
d.close()
def build_import_library():
if os.name != 'nt':
return
arch = get_build_architecture()
if arch == 'AMD64':
return _build_import_library_amd64()
elif arch == 'Intel':
return _build_import_library_x86()
else:
raise ValueError("Unhandled arch %s" % arch)
def _build_import_library_amd64():
dll_file = find_python_dll()
out_name = "libpython%d%d.a" % tuple(sys.version_info[:2])
out_file = os.path.join(sys.prefix, 'libs', out_name)
if os.path.isfile(out_file):
log.debug('Skip building import library: "%s" exists' % (out_file))
return
def_name = "python%d%d.def" % tuple(sys.version_info[:2])
def_file = os.path.join(sys.prefix,'libs',def_name)
log.info('Building import library (arch=AMD64): "%s" (from %s)' \
% (out_file, dll_file))
generate_def(dll_file, def_file)
cmd = ['dlltool', '-d', def_file, '-l', out_file]
subprocess.Popen(cmd)
def _build_import_library_x86():
""" Build the import libraries for Mingw32-gcc on Windows
"""
lib_name = "python%d%d.lib" % tuple(sys.version_info[:2])
lib_file = os.path.join(sys.prefix,'libs',lib_name)
out_name = "libpython%d%d.a" % tuple(sys.version_info[:2])
out_file = os.path.join(sys.prefix,'libs',out_name)
if not os.path.isfile(lib_file):
log.warn('Cannot build import library: "%s" not found' % (lib_file))
return
if os.path.isfile(out_file):
log.debug('Skip building import library: "%s" exists' % (out_file))
return
log.info('Building import library (ARCH=x86): "%s"' % (out_file))
from numpy.distutils import lib2def
def_name = "python%d%d.def" % tuple(sys.version_info[:2])
def_file = os.path.join(sys.prefix,'libs',def_name)
nm_cmd = '%s %s' % (lib2def.DEFAULT_NM, lib_file)
nm_output = lib2def.getnm(nm_cmd)
dlist, flist = lib2def.parse_nm(nm_output)
lib2def.output_def(dlist, flist, lib2def.DEF_HEADER, open(def_file, 'w'))
dll_name = "python%d%d.dll" % tuple(sys.version_info[:2])
args = (dll_name,def_file,out_file)
cmd = 'dlltool --dllname %s --def %s --output-lib %s' % args
status = os.system(cmd)
# for now, fail silently
if status:
log.warn('Failed to build import library for gcc. Linking will fail.')
#if not success:
# msg = "Couldn't find import library, and failed to build it."
# raise DistutilsPlatformError, msg
return
#=====================================
# Dealing with Visual Studio MANIFESTS
#=====================================
# Functions to deal with visual studio manifests. Manifest are a mechanism to
# enforce strong DLL versioning on windows, and has nothing to do with
# distutils MANIFEST. manifests are XML files with version info, and used by
# the OS loader; they are necessary when linking against a DLL not in the
# system path; in particular, official python 2.6 binary is built against the
# MS runtime 9 (the one from VS 2008), which is not available on most windows
# systems; python 2.6 installer does install it in the Win SxS (Side by side)
# directory, but this requires the manifest for this to work. This is a big
# mess, thanks MS for a wonderful system.
# XXX: ideally, we should use exactly the same version as used by python. I
# submitted a patch to get this version, but it was only included for python
# 2.6.1 and above. So for versions below, we use a "best guess".
_MSVCRVER_TO_FULLVER = {}
if sys.platform == 'win32':
try:
import msvcrt
if hasattr(msvcrt, "CRT_ASSEMBLY_VERSION"):
_MSVCRVER_TO_FULLVER['90'] = msvcrt.CRT_ASSEMBLY_VERSION
else:
_MSVCRVER_TO_FULLVER['90'] = "9.0.21022.8"
# I took one version in my SxS directory: no idea if it is the good
# one, and we can't retrieve it from python
_MSVCRVER_TO_FULLVER['80'] = "8.0.50727.42"
except ImportError:
# If we are here, means python was not built with MSVC. Not sure what to do
# in that case: manifest building will fail, but it should not be used in
# that case anyway
log.warn('Cannot import msvcrt: using manifest will not be possible')
def msvc_manifest_xml(maj, min):
"""Given a major and minor version of the MSVCR, returns the
corresponding XML file."""
try:
fullver = _MSVCRVER_TO_FULLVER[str(maj * 10 + min)]
except KeyError:
raise ValueError("Version %d,%d of MSVCRT not supported yet" \
% (maj, min))
# Don't be fooled, it looks like an XML, but it is not. In particular, it
# should not have any space before starting, and its size should be
# divisible by 4, most likely for alignement constraints when the xml is
# embedded in the binary...
# This template was copied directly from the python 2.6 binary (using
# strings.exe from mingw on python.exe).
template = """\
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
<security>
<requestedPrivileges>
<requestedExecutionLevel level="asInvoker" uiAccess="false"></requestedExecutionLevel>
</requestedPrivileges>
</security>
</trustInfo>
<dependency>
<dependentAssembly>
<assemblyIdentity type="win32" name="Microsoft.VC%(maj)d%(min)d.CRT" version="%(fullver)s" processorArchitecture="*" publicKeyToken="1fc8b3b9a1e18e3b"></assemblyIdentity>
</dependentAssembly>
</dependency>
</assembly>"""
return template % {'fullver': fullver, 'maj': maj, 'min': min}
def manifest_rc(name, type='dll'):
"""Return the rc file used to generate the res file which will be embedded
as manifest for given manifest file name, of given type ('dll' or
'exe').
Parameters
---------- name: str
name of the manifest file to embed
type: str ('dll', 'exe')
type of the binary which will embed the manifest"""
if type == 'dll':
rctype = 2
elif type == 'exe':
rctype = 1
else:
raise ValueError("Type %s not supported" % type)
return """\
#include "winuser.h"
%d RT_MANIFEST %s""" % (rctype, name)
def check_embedded_msvcr_match_linked(msver):
"""msver is the ms runtime version used for the MANIFEST."""
# check msvcr major version are the same for linking and
# embedding
msvcv = msvc_runtime_library()
if msvcv:
maj = int(msvcv[5:6])
if not maj == int(msver):
raise ValueError, \
"Discrepancy between linked msvcr " \
"(%d) and the one about to be embedded " \
"(%d)" % (int(msver), maj)
def configtest_name(config):
base = os.path.basename(config._gen_temp_sourcefile("yo", [], "c"))
return os.path.splitext(base)[0]
def manifest_name(config):
# Get configest name (including suffix)
root = configtest_name(config)
exext = config.compiler.exe_extension
return root + exext + ".manifest"
def rc_name(config):
# Get configest name (including suffix)
root = configtest_name(config)
return root + ".rc"
def generate_manifest(config):
msver = get_build_msvc_version()
if msver is not None:
if msver >= 8:
check_embedded_msvcr_match_linked(msver)
ma = int(msver)
mi = int((msver - ma) * 10)
# Write the manifest file
manxml = msvc_manifest_xml(ma, mi)
man = open(manifest_name(config), "w")
config.temp_files.append(manifest_name(config))
man.write(manxml)
man.close()
# # Write the rc file
# manrc = manifest_rc(manifest_name(self), "exe")
# rc = open(rc_name(self), "w")
# self.temp_files.append(manrc)
# rc.write(manrc)
# rc.close()
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