mirror of https://github.com/python/cpython
287 lines
10 KiB
Python
287 lines
10 KiB
Python
"""distutils.cygwinccompiler
|
|
|
|
Provides the CygwinCCompiler class, a subclass of UnixCCompiler that
|
|
handles the Cygwin port of the GNU C compiler to Windows. It also contains
|
|
the Mingw32CCompiler class which handles the mingw32 port of GCC (same as
|
|
cygwin in no-cygwin mode).
|
|
"""
|
|
|
|
# problems:
|
|
#
|
|
# * if you use a msvc compiled python version (1.5.2)
|
|
# 1. you have to insert a __GNUC__ section in its config.h
|
|
# 2. you have to generate an import library for its dll
|
|
# - create a def-file for python??.dll
|
|
# - create an import library using
|
|
# dlltool --dllname python15.dll --def python15.def \
|
|
# --output-lib libpython15.a
|
|
#
|
|
# see also http://starship.python.net/crew/kernr/mingw32/Notes.html
|
|
#
|
|
# * We put export_symbols in a def-file, and don't use
|
|
# --export-all-symbols because it doesn't worked reliable in some
|
|
# tested configurations. And because other windows compilers also
|
|
# need their symbols specified this no serious problem.
|
|
#
|
|
# tested configurations:
|
|
#
|
|
# * cygwin gcc 2.91.57/ld 2.9.4/dllwrap 0.2.4 works
|
|
# (after patching python's config.h and for C++ some other include files)
|
|
# see also http://starship.python.net/crew/kernr/mingw32/Notes.html
|
|
# * mingw32 gcc 2.95.2/ld 2.9.4/dllwrap 0.2.4 works
|
|
# (ld doesn't support -shared, so we use dllwrap)
|
|
# * cygwin gcc 2.95.2/ld 2.10.90/dllwrap 2.10.90 works now
|
|
# - its dllwrap doesn't work, there is a bug in binutils 2.10.90
|
|
# see also http://sources.redhat.com/ml/cygwin/2000-06/msg01274.html
|
|
# - using gcc -mdll instead dllwrap doesn't work without -static because
|
|
# it tries to link against dlls instead their import libraries. (If
|
|
# it finds the dll first.)
|
|
# By specifying -static we force ld to link against the import libraries,
|
|
# this is windows standard and there are normally not the necessary symbols
|
|
# in the dlls.
|
|
# *** only the version of June 2000 shows these problems
|
|
# * cygwin gcc 3.2/ld 2.13.90 works
|
|
# (ld supports -shared)
|
|
# * mingw gcc 3.2/ld 2.13 works
|
|
# (ld supports -shared)
|
|
|
|
import os
|
|
import sys
|
|
from subprocess import Popen, PIPE, check_output
|
|
import re
|
|
|
|
from distutils.unixccompiler import UnixCCompiler
|
|
from distutils.errors import CCompilerError
|
|
from distutils.version import LooseVersion
|
|
from distutils.spawn import find_executable
|
|
|
|
def get_msvcr():
|
|
"""Include the appropriate MSVC runtime library if Python was built
|
|
with MSVC 7.0 or later.
|
|
"""
|
|
msc_pos = sys.version.find('MSC v.')
|
|
if msc_pos != -1:
|
|
msc_ver = sys.version[msc_pos+6:msc_pos+10]
|
|
if msc_ver == '1300':
|
|
# MSVC 7.0
|
|
return ['msvcr70']
|
|
elif msc_ver == '1310':
|
|
# MSVC 7.1
|
|
return ['msvcr71']
|
|
elif msc_ver == '1400':
|
|
# VS2005 / MSVC 8.0
|
|
return ['msvcr80']
|
|
elif msc_ver == '1500':
|
|
# VS2008 / MSVC 9.0
|
|
return ['msvcr90']
|
|
elif msc_ver == '1600':
|
|
# VS2010 / MSVC 10.0
|
|
return ['msvcr100']
|
|
else:
|
|
raise ValueError("Unknown MS Compiler version %s " % msc_ver)
|
|
|
|
|
|
class CygwinCCompiler(UnixCCompiler):
|
|
""" Handles the Cygwin port of the GNU C compiler to Windows.
|
|
"""
|
|
compiler_type = 'cygwin'
|
|
obj_extension = ".o"
|
|
static_lib_extension = ".a"
|
|
shared_lib_extension = ".dll"
|
|
static_lib_format = "lib%s%s"
|
|
shared_lib_format = "%s%s"
|
|
exe_extension = ".exe"
|
|
|
|
def __init__(self, verbose=0, dry_run=0, force=0):
|
|
|
|
UnixCCompiler.__init__(self, verbose, dry_run, force)
|
|
|
|
status, details = check_config_h()
|
|
self.debug_print("Python's GCC status: %s (details: %s)" %
|
|
(status, details))
|
|
if status is not CONFIG_H_OK:
|
|
self.warn(
|
|
"Python's pyconfig.h doesn't seem to support your compiler. "
|
|
"Reason: %s. "
|
|
"Compiling may fail because of undefined preprocessor macros."
|
|
% details)
|
|
|
|
self.gcc_version, self.ld_version, self.dllwrap_version = \
|
|
get_versions()
|
|
self.debug_print(self.compiler_type + ": gcc %s, ld %s, dllwrap %s\n" %
|
|
(self.gcc_version,
|
|
self.ld_version,
|
|
self.dllwrap_version) )
|
|
|
|
# ld_version >= "2.10.90" and < "2.13" should also be able to use
|
|
# gcc -mdll instead of dllwrap
|
|
# Older dllwraps had own version numbers, newer ones use the
|
|
# same as the rest of binutils ( also ld )
|
|
# dllwrap 2.10.90 is buggy
|
|
if self.ld_version >= "2.10.90":
|
|
self.linker_dll = "gcc"
|
|
else:
|
|
self.linker_dll = "dllwrap"
|
|
|
|
# ld_version >= "2.13" support -shared so use it instead of
|
|
# -mdll -static
|
|
if self.ld_version >= "2.13":
|
|
shared_option = "-shared"
|
|
else:
|
|
shared_option = "-mdll -static"
|
|
|
|
# Hard-code GCC because that's what this is all about.
|
|
# XXX optimization, warnings etc. should be customizable.
|
|
self.set_executables(compiler='gcc -mcygwin -O -Wall',
|
|
compiler_so='gcc -mcygwin -mdll -O -Wall',
|
|
compiler_cxx='g++ -mcygwin -O -Wall',
|
|
linker_exe='gcc -mcygwin',
|
|
linker_so=('%s -mcygwin %s' %
|
|
(self.linker_dll, shared_option)))
|
|
|
|
# cygwin and mingw32 need different sets of libraries
|
|
if self.gcc_version == "2.91.57":
|
|
# cygwin shouldn't need msvcrt, but without the dlls will crash
|
|
# (gcc version 2.91.57) -- perhaps something about initialization
|
|
self.dll_libraries=["msvcrt"]
|
|
self.warn(
|
|
"Consider upgrading to a newer version of gcc")
|
|
else:
|
|
# Include the appropriate MSVC runtime library if Python was built
|
|
# with MSVC 7.0 or later.
|
|
self.dll_libraries = get_msvcr()
|
|
|
|
|
|
# the same as cygwin plus some additional parameters
|
|
class Mingw32CCompiler(CygwinCCompiler):
|
|
""" Handles the Mingw32 port of the GNU C compiler to Windows.
|
|
"""
|
|
compiler_type = 'mingw32'
|
|
|
|
def __init__(self, verbose=0, dry_run=0, force=0):
|
|
|
|
CygwinCCompiler.__init__ (self, verbose, dry_run, force)
|
|
|
|
# ld_version >= "2.13" support -shared so use it instead of
|
|
# -mdll -static
|
|
if self.ld_version >= "2.13":
|
|
shared_option = "-shared"
|
|
else:
|
|
shared_option = "-mdll -static"
|
|
|
|
# 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 is_cygwingcc():
|
|
raise CCompilerError(
|
|
'Cygwin gcc cannot be used with --compiler=mingw32')
|
|
|
|
self.set_executables(compiler='gcc -O -Wall',
|
|
compiler_so='gcc -mdll -O -Wall',
|
|
compiler_cxx='g++ -O -Wall',
|
|
linker_exe='gcc',
|
|
linker_so='%s %s %s'
|
|
% (self.linker_dll, shared_option,
|
|
entry_point))
|
|
# 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=[]
|
|
|
|
# Include the appropriate MSVC runtime library if Python was built
|
|
# with MSVC 7.0 or later.
|
|
self.dll_libraries = get_msvcr()
|
|
|
|
# Because these compilers aren't configured in Python's pyconfig.h file by
|
|
# default, we should at least warn the user if he is using an unmodified
|
|
# version.
|
|
|
|
CONFIG_H_OK = "ok"
|
|
CONFIG_H_NOTOK = "not ok"
|
|
CONFIG_H_UNCERTAIN = "uncertain"
|
|
|
|
def check_config_h():
|
|
"""Check if the current Python installation appears amenable to building
|
|
extensions with GCC.
|
|
|
|
Returns a tuple (status, details), where 'status' is one of the following
|
|
constants:
|
|
|
|
- CONFIG_H_OK: all is well, go ahead and compile
|
|
- CONFIG_H_NOTOK: doesn't look good
|
|
- CONFIG_H_UNCERTAIN: not sure -- unable to read pyconfig.h
|
|
|
|
'details' is a human-readable string explaining the situation.
|
|
|
|
Note there are two ways to conclude "OK": either 'sys.version' contains
|
|
the string "GCC" (implying that this Python was built with GCC), or the
|
|
installed "pyconfig.h" contains the string "__GNUC__".
|
|
"""
|
|
|
|
# XXX since this function also checks sys.version, it's not strictly a
|
|
# "pyconfig.h" check -- should probably be renamed...
|
|
|
|
import sysconfig
|
|
|
|
# if sys.version contains GCC then python was compiled with GCC, and the
|
|
# pyconfig.h file should be OK
|
|
if "GCC" in sys.version:
|
|
return CONFIG_H_OK, "sys.version mentions 'GCC'"
|
|
|
|
# let's see if __GNUC__ is mentioned in python.h
|
|
fn = sysconfig.get_config_h_filename()
|
|
try:
|
|
config_h = open(fn)
|
|
try:
|
|
if "__GNUC__" in config_h.read():
|
|
return CONFIG_H_OK, "'%s' mentions '__GNUC__'" % fn
|
|
else:
|
|
return CONFIG_H_NOTOK, "'%s' does not mention '__GNUC__'" % fn
|
|
finally:
|
|
config_h.close()
|
|
except OSError as exc:
|
|
return (CONFIG_H_UNCERTAIN,
|
|
"couldn't read '%s': %s" % (fn, exc.strerror))
|
|
|
|
RE_VERSION = re.compile(br'(\d+\.\d+(\.\d+)*)')
|
|
|
|
def _find_exe_version(cmd):
|
|
"""Find the version of an executable by running `cmd` in the shell.
|
|
|
|
If the command is not found, or the output does not match
|
|
`RE_VERSION`, returns None.
|
|
"""
|
|
executable = cmd.split()[0]
|
|
if find_executable(executable) is None:
|
|
return None
|
|
out = Popen(cmd, shell=True, stdout=PIPE).stdout
|
|
try:
|
|
out_string = out.read()
|
|
finally:
|
|
out.close()
|
|
result = RE_VERSION.search(out_string)
|
|
if result is None:
|
|
return None
|
|
# LooseVersion works with strings
|
|
# so we need to decode our bytes
|
|
return LooseVersion(result.group(1).decode())
|
|
|
|
def get_versions():
|
|
""" Try to find out the versions of gcc, ld and dllwrap.
|
|
|
|
If not possible it returns None for it.
|
|
"""
|
|
commands = ['gcc -dumpversion', 'ld -v', 'dllwrap --version']
|
|
return tuple([_find_exe_version(cmd) for cmd in commands])
|
|
|
|
def is_cygwingcc():
|
|
'''Try to determine if the gcc that would be used is from cygwin.'''
|
|
out_string = check_output(['gcc', '-dumpmachine'])
|
|
return out_string.strip().endswith(b'cygwin')
|