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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 sys
import log
import scipy_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 scipy_distutils/ccompiler.py
# 3. Force windows to use g77
import distutils.cygwinccompiler
from distutils.version import StrictVersion
from scipy_distutils.ccompiler import gen_preprocess_options, gen_lib_options
from distutils.errors import DistutilsExecError, CompileError, UnknownFileError
from distutils.unixccompiler import UnixCCompiler
# 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
out = os.popen('gcc -dumpversion','r')
out_string = out.read()
out.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':
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))
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 -O2 -Wall -Wstrict-prototypes',
linker_exe='g++ ',
linker_so='g++ -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):
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 build_import_library():
""" Build the import libraries for Mingw32-gcc on Windows
"""
if os.name != 'nt':
return
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: "%s"' % (out_file))
from scipy_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
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