442 lines
17 KiB
Python
442 lines
17 KiB
Python
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"""distutils.cygwinccompiler
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Provides the CygwinCCompiler class, a subclass of UnixCCompiler that
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handles the Cygwin port of the GNU C compiler to Windows. It also contains
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the Mingw32CCompiler class which handles the mingw32 port of GCC (same as
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cygwin in no-cygwin mode).
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"""
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# problems:
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#
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# * if you use a msvc compiled python version (1.5.2)
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# 1. you have to insert a __GNUC__ section in its config.h
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# 2. you have to generate a import library for its dll
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# - create a def-file for python??.dll
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# - create a import library using
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# dlltool --dllname python15.dll --def python15.def \
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# --output-lib libpython15.a
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#
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# see also http://starship.python.net/crew/kernr/mingw32/Notes.html
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#
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# * We put export_symbols in a def-file, and don't use
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# --export-all-symbols because it doesn't worked reliable in some
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# tested configurations. And because other windows compilers also
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# need their symbols specified this no serious problem.
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#
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# tested configurations:
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#
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# * cygwin gcc 2.91.57/ld 2.9.4/dllwrap 0.2.4 works
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# (after patching python's config.h and for C++ some other include files)
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# see also http://starship.python.net/crew/kernr/mingw32/Notes.html
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# * mingw32 gcc 2.95.2/ld 2.9.4/dllwrap 0.2.4 works
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# (ld doesn't support -shared, so we use dllwrap)
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# * cygwin gcc 2.95.2/ld 2.10.90/dllwrap 2.10.90 works now
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# - its dllwrap doesn't work, there is a bug in binutils 2.10.90
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# see also http://sources.redhat.com/ml/cygwin/2000-06/msg01274.html
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# - using gcc -mdll instead dllwrap doesn't work without -static because
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# it tries to link against dlls instead their import libraries. (If
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# it finds the dll first.)
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# By specifying -static we force ld to link against the import libraries,
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# this is windows standard and there are normally not the necessary symbols
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# in the dlls.
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# *** only the version of June 2000 shows these problems
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# * cygwin gcc 3.2/ld 2.13.90 works
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# (ld supports -shared)
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# * mingw gcc 3.2/ld 2.13 works
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# (ld supports -shared)
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# This module should be kept compatible with Python 2.1.
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__revision__ = "$Id: cygwinccompiler.py 65835 2008-08-18 19:33:42Z amaury.forgeotdarc $"
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import os,sys,copy
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from distutils.ccompiler import gen_preprocess_options, gen_lib_options
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from distutils.unixccompiler import UnixCCompiler
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from distutils.file_util import write_file
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from distutils.errors import DistutilsExecError, CompileError, UnknownFileError
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from distutils import log
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class CygwinCCompiler (UnixCCompiler):
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compiler_type = 'cygwin'
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obj_extension = ".o"
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static_lib_extension = ".a"
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shared_lib_extension = ".dll"
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static_lib_format = "lib%s%s"
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shared_lib_format = "%s%s"
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exe_extension = ".exe"
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def __init__ (self, verbose=0, dry_run=0, force=0):
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UnixCCompiler.__init__ (self, verbose, dry_run, force)
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(status, details) = check_config_h()
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self.debug_print("Python's GCC status: %s (details: %s)" %
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(status, details))
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if status is not CONFIG_H_OK:
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self.warn(
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"Python's pyconfig.h doesn't seem to support your compiler. "
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"Reason: %s. "
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"Compiling may fail because of undefined preprocessor macros."
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% details)
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self.gcc_version, self.ld_version, self.dllwrap_version = \
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get_versions()
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self.debug_print(self.compiler_type + ": gcc %s, ld %s, dllwrap %s\n" %
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(self.gcc_version,
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self.ld_version,
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self.dllwrap_version) )
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# ld_version >= "2.10.90" and < "2.13" should also be able to use
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# gcc -mdll instead of dllwrap
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# Older dllwraps had own version numbers, newer ones use the
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# same as the rest of binutils ( also ld )
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# dllwrap 2.10.90 is buggy
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if self.ld_version >= "2.10.90":
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self.linker_dll = "gcc"
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else:
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self.linker_dll = "dllwrap"
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# ld_version >= "2.13" support -shared so use it instead of
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# -mdll -static
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if self.ld_version >= "2.13":
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shared_option = "-shared"
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else:
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shared_option = "-mdll -static"
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# Hard-code GCC because that's what this is all about.
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# XXX optimization, warnings etc. should be customizable.
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self.set_executables(compiler='gcc -mcygwin -O -Wall',
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compiler_so='gcc -mcygwin -mdll -O -Wall',
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compiler_cxx='g++ -mcygwin -O -Wall',
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linker_exe='gcc -mcygwin',
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linker_so=('%s -mcygwin %s' %
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(self.linker_dll, shared_option)))
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# cygwin and mingw32 need different sets of libraries
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if self.gcc_version == "2.91.57":
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# cygwin shouldn't need msvcrt, but without the dlls will crash
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# (gcc version 2.91.57) -- perhaps something about initialization
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self.dll_libraries=["msvcrt"]
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self.warn(
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"Consider upgrading to a newer version of gcc")
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else:
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self.dll_libraries=[]
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# Include the appropriate MSVC runtime library if Python was built
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# with MSVC 7.0 or 7.1.
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msc_pos = sys.version.find('MSC v.')
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if msc_pos != -1:
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msc_ver = sys.version[msc_pos+6:msc_pos+10]
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if msc_ver == '1300':
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# MSVC 7.0
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self.dll_libraries = ['msvcr70']
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elif msc_ver == '1310':
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# MSVC 7.1
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self.dll_libraries = ['msvcr71']
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# __init__ ()
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def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts):
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if ext == '.rc' or ext == '.res':
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# gcc needs '.res' and '.rc' compiled to object files !!!
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try:
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self.spawn(["windres", "-i", src, "-o", obj])
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except DistutilsExecError, msg:
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raise CompileError, msg
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else: # for other files use the C-compiler
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try:
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self.spawn(self.compiler_so + cc_args + [src, '-o', obj] +
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extra_postargs)
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except DistutilsExecError, msg:
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raise CompileError, msg
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def link (self,
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target_desc,
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objects,
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output_filename,
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output_dir=None,
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libraries=None,
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library_dirs=None,
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runtime_library_dirs=None,
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export_symbols=None,
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debug=0,
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extra_preargs=None,
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extra_postargs=None,
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build_temp=None,
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target_lang=None):
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# use separate copies, so we can modify the lists
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extra_preargs = copy.copy(extra_preargs or [])
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libraries = copy.copy(libraries or [])
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objects = copy.copy(objects or [])
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# Additional libraries
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libraries.extend(self.dll_libraries)
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# handle export symbols by creating a def-file
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# with executables this only works with gcc/ld as linker
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if ((export_symbols is not None) and
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(target_desc != self.EXECUTABLE or self.linker_dll == "gcc")):
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# (The linker doesn't do anything if output is up-to-date.
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# So it would probably better to check if we really need this,
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# but for this we had to insert some unchanged parts of
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# UnixCCompiler, and this is not what we want.)
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# we want to put some files in the same directory as the
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# object files are, build_temp doesn't help much
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# where are the object files
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temp_dir = os.path.dirname(objects[0])
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# name of dll to give the helper files the same base name
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(dll_name, dll_extension) = os.path.splitext(
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os.path.basename(output_filename))
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# generate the filenames for these files
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def_file = os.path.join(temp_dir, dll_name + ".def")
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lib_file = os.path.join(temp_dir, 'lib' + dll_name + ".a")
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# Generate .def file
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contents = [
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"LIBRARY %s" % os.path.basename(output_filename),
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"EXPORTS"]
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for sym in export_symbols:
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contents.append(sym)
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self.execute(write_file, (def_file, contents),
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"writing %s" % def_file)
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# next add options for def-file and to creating import libraries
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# dllwrap uses different options than gcc/ld
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if self.linker_dll == "dllwrap":
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extra_preargs.extend(["--output-lib", lib_file])
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# for dllwrap we have to use a special option
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extra_preargs.extend(["--def", def_file])
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# we use gcc/ld here and can be sure ld is >= 2.9.10
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else:
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# doesn't work: bfd_close build\...\libfoo.a: Invalid operation
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#extra_preargs.extend(["-Wl,--out-implib,%s" % lib_file])
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# for gcc/ld the def-file is specified as any object files
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objects.append(def_file)
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#end: if ((export_symbols is not None) and
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# (target_desc != self.EXECUTABLE or self.linker_dll == "gcc")):
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# who wants symbols and a many times larger output file
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# should explicitly switch the debug mode on
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# otherwise we let dllwrap/ld strip the output file
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# (On my machine: 10KB < stripped_file < ??100KB
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# unstripped_file = stripped_file + XXX KB
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# ( XXX=254 for a typical python extension))
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if not debug:
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extra_preargs.append("-s")
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UnixCCompiler.link(self,
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target_desc,
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objects,
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output_filename,
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output_dir,
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libraries,
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library_dirs,
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runtime_library_dirs,
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None, # export_symbols, we do this in our def-file
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debug,
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extra_preargs,
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extra_postargs,
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build_temp,
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target_lang)
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# link ()
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# -- Miscellaneous methods -----------------------------------------
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# overwrite the one from CCompiler to support rc and res-files
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def object_filenames (self,
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source_filenames,
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strip_dir=0,
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output_dir=''):
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if output_dir is None: output_dir = ''
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obj_names = []
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for src_name in source_filenames:
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# use normcase to make sure '.rc' is really '.rc' and not '.RC'
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(base, ext) = os.path.splitext (os.path.normcase(src_name))
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if ext not in (self.src_extensions + ['.rc','.res']):
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raise UnknownFileError, \
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"unknown file type '%s' (from '%s')" % \
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(ext, src_name)
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if strip_dir:
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base = os.path.basename (base)
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if ext == '.res' or ext == '.rc':
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# these need to be compiled to object files
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obj_names.append (os.path.join (output_dir,
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base + ext + self.obj_extension))
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else:
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obj_names.append (os.path.join (output_dir,
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base + self.obj_extension))
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return obj_names
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# object_filenames ()
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# class CygwinCCompiler
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# the same as cygwin plus some additional parameters
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class Mingw32CCompiler (CygwinCCompiler):
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compiler_type = 'mingw32'
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def __init__ (self,
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verbose=0,
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dry_run=0,
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force=0):
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CygwinCCompiler.__init__ (self, verbose, dry_run, force)
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# ld_version >= "2.13" support -shared so use it instead of
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# -mdll -static
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if self.ld_version >= "2.13":
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shared_option = "-shared"
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else:
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shared_option = "-mdll -static"
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# A real mingw32 doesn't need to specify a different entry point,
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# but cygwin 2.91.57 in no-cygwin-mode needs it.
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if self.gcc_version <= "2.91.57":
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entry_point = '--entry _DllMain@12'
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else:
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entry_point = ''
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self.set_executables(compiler='gcc -mno-cygwin -O -Wall',
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compiler_so='gcc -mno-cygwin -mdll -O -Wall',
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compiler_cxx='g++ -mno-cygwin -O -Wall',
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linker_exe='gcc -mno-cygwin',
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linker_so='%s -mno-cygwin %s %s'
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% (self.linker_dll, shared_option,
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entry_point))
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# Maybe we should also append -mthreads, but then the finished
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# dlls need another dll (mingwm10.dll see Mingw32 docs)
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# (-mthreads: Support thread-safe exception handling on `Mingw32')
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# no additional libraries needed
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self.dll_libraries=[]
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# Include the appropriate MSVC runtime library if Python was built
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# with MSVC 7.0 or 7.1.
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msc_pos = sys.version.find('MSC v.')
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if msc_pos != -1:
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msc_ver = sys.version[msc_pos+6:msc_pos+10]
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if msc_ver == '1300':
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# MSVC 7.0
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self.dll_libraries = ['msvcr70']
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elif msc_ver == '1310':
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# MSVC 7.1
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self.dll_libraries = ['msvcr71']
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# __init__ ()
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# class Mingw32CCompiler
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# Because these compilers aren't configured in Python's pyconfig.h file by
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# default, we should at least warn the user if he is using a unmodified
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# version.
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CONFIG_H_OK = "ok"
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CONFIG_H_NOTOK = "not ok"
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CONFIG_H_UNCERTAIN = "uncertain"
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def check_config_h():
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"""Check if the current Python installation (specifically, pyconfig.h)
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|
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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...
|
||
|
|
|
||
|
|
from distutils import sysconfig
|
||
|
|
import string
|
||
|
|
# if sys.version contains GCC then python was compiled with
|
||
|
|
# GCC, and the pyconfig.h file should be OK
|
||
|
|
if string.find(sys.version,"GCC") >= 0:
|
||
|
|
return (CONFIG_H_OK, "sys.version mentions 'GCC'")
|
||
|
|
|
||
|
|
fn = sysconfig.get_config_h_filename()
|
||
|
|
try:
|
||
|
|
# It would probably better to read single lines to search.
|
||
|
|
# But we do this only once, and it is fast enough
|
||
|
|
f = open(fn)
|
||
|
|
s = f.read()
|
||
|
|
f.close()
|
||
|
|
|
||
|
|
except IOError, exc:
|
||
|
|
# if we can't read this file, we cannot say it is wrong
|
||
|
|
# the compiler will complain later about this file as missing
|
||
|
|
return (CONFIG_H_UNCERTAIN,
|
||
|
|
"couldn't read '%s': %s" % (fn, exc.strerror))
|
||
|
|
|
||
|
|
else:
|
||
|
|
# "pyconfig.h" contains an "#ifdef __GNUC__" or something similar
|
||
|
|
if string.find(s,"__GNUC__") >= 0:
|
||
|
|
return (CONFIG_H_OK, "'%s' mentions '__GNUC__'" % fn)
|
||
|
|
else:
|
||
|
|
return (CONFIG_H_NOTOK, "'%s' does not mention '__GNUC__'" % fn)
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
def get_versions():
|
||
|
|
""" Try to find out the versions of gcc, ld and dllwrap.
|
||
|
|
If not possible it returns None for it.
|
||
|
|
"""
|
||
|
|
from distutils.version import LooseVersion
|
||
|
|
from distutils.spawn import find_executable
|
||
|
|
import re
|
||
|
|
|
||
|
|
gcc_exe = find_executable('gcc')
|
||
|
|
if gcc_exe:
|
||
|
|
out = os.popen(gcc_exe + ' -dumpversion','r')
|
||
|
|
out_string = out.read()
|
||
|
|
out.close()
|
||
|
|
result = re.search('(\d+\.\d+(\.\d+)*)',out_string)
|
||
|
|
if result:
|
||
|
|
gcc_version = LooseVersion(result.group(1))
|
||
|
|
else:
|
||
|
|
gcc_version = None
|
||
|
|
else:
|
||
|
|
gcc_version = None
|
||
|
|
ld_exe = find_executable('ld')
|
||
|
|
if ld_exe:
|
||
|
|
out = os.popen(ld_exe + ' -v','r')
|
||
|
|
out_string = out.read()
|
||
|
|
out.close()
|
||
|
|
result = re.search('(\d+\.\d+(\.\d+)*)',out_string)
|
||
|
|
if result:
|
||
|
|
ld_version = LooseVersion(result.group(1))
|
||
|
|
else:
|
||
|
|
ld_version = None
|
||
|
|
else:
|
||
|
|
ld_version = None
|
||
|
|
dllwrap_exe = find_executable('dllwrap')
|
||
|
|
if dllwrap_exe:
|
||
|
|
out = os.popen(dllwrap_exe + ' --version','r')
|
||
|
|
out_string = out.read()
|
||
|
|
out.close()
|
||
|
|
result = re.search(' (\d+\.\d+(\.\d+)*)',out_string)
|
||
|
|
if result:
|
||
|
|
dllwrap_version = LooseVersion(result.group(1))
|
||
|
|
else:
|
||
|
|
dllwrap_version = None
|
||
|
|
else:
|
||
|
|
dllwrap_version = None
|
||
|
|
return (gcc_version, ld_version, dllwrap_version)
|