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Diffstat (limited to 'lib/python2.7/distutils/cygwinccompiler.py')
| -rw-r--r-- | lib/python2.7/distutils/cygwinccompiler.py | 484 |
1 files changed, 484 insertions, 0 deletions
diff --git a/lib/python2.7/distutils/cygwinccompiler.py b/lib/python2.7/distutils/cygwinccompiler.py new file mode 100644 index 0000000..3dd7f4d --- /dev/null +++ b/lib/python2.7/distutils/cygwinccompiler.py @@ -0,0 +1,484 @@ +"""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 a import library for its dll +# - create a def-file for python??.dll +# - create a 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) + +# This module should be kept compatible with Python 2.1. + +__revision__ = "$Id$" + +import os,sys,copy +from distutils.ccompiler import gen_preprocess_options, gen_lib_options +from distutils.unixccompiler import UnixCCompiler +from distutils.file_util import write_file +from distutils.errors import DistutilsExecError, CompileError, UnknownFileError +from distutils import log + +def get_msvcr(): + """Include the appropriate MSVC runtime library if Python was built + with MSVC 7.0 or later. + """ + # FIXME: next code is from issue870382 + # MS C-runtime libraries never support backward compatibility. + # Linking to a different library without to specify correct runtime + # version for the headers will link renamed functions to msvcrt. + # See issue3308: this piece of code is python problem even + # with correct w32api headers. + # Issue: for MSVC compiler we can get the version and from version + # to determine mcvcrt as code below. But what about if python is + # build with GCC compiler? + # Output of sys.version is information for python build on first + # line, on the next line is information for the compiler and the + # output lack information for the C-runtime. + 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'] + else: + raise ValueError("Unknown MS Compiler version %s " % msc_ver) + else: + return [] + + +class CygwinCCompiler (UnixCCompiler): + + compiler_type = 'cygwin' + obj_extension = ".o" + static_lib_extension = ".a" + shared_lib_extension = ".dll" + # FIXME: dylib_... = ".dll.a" is not enought for binutils + # loader on win32 platform !!! + dylib_lib_extension = ".dll.a" + 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) + + # Next line of code is problem for cross-compiled enviroment: + # NOTE: GCC cross-compiler is prefixed by the <hostarch>-<hostos>- + # and by default binaries are installed in same directory + # as native compiler. + 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" + + # FIXME: + # Hard-code may override unix-compiler settings and isn't + # possible to use Makefile variables to pass correct flags ! + # 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() + + # __init__ () + + + def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts): + if ext == '.rc' or ext == '.res': + # gcc needs '.res' and '.rc' compiled to object files !!! + try: + self.spawn(["windres", "-i", src, "-o", obj]) + except DistutilsExecError, msg: + raise CompileError, msg + else: # for other files use the C-compiler + try: + self.spawn(self.compiler_so + cc_args + [src, '-o', obj] + + extra_postargs) + except DistutilsExecError, msg: + raise CompileError, msg + + def link (self, + target_desc, + objects, + output_filename, + output_dir=None, + libraries=None, + library_dirs=None, + runtime_library_dirs=None, + export_symbols=None, + debug=0, + extra_preargs=None, + extra_postargs=None, + build_temp=None, + target_lang=None): + + # use separate copies, so we can modify the lists + extra_preargs = copy.copy(extra_preargs or []) + libraries = copy.copy(libraries or []) + objects = copy.copy(objects or []) + + # Additional libraries + libraries.extend(self.dll_libraries) + + # handle export symbols by creating a def-file + # with executables this only works with gcc/ld as linker + if ((export_symbols is not None) and + (target_desc != self.EXECUTABLE or self.linker_dll == "gcc")): + # (The linker doesn't do anything if output is up-to-date. + # So it would probably better to check if we really need this, + # but for this we had to insert some unchanged parts of + # UnixCCompiler, and this is not what we want.) + + # we want to put some files in the same directory as the + # object files are, build_temp doesn't help much + # where are the object files + temp_dir = os.path.dirname(objects[0]) + # name of dll to give the helper files the same base name + (dll_name, dll_extension) = os.path.splitext( + os.path.basename(output_filename)) + + # generate the filenames for these files + def_file = os.path.join(temp_dir, dll_name + ".def") + lib_file = os.path.join(temp_dir, 'lib' + dll_name + ".a") + + # Generate .def file + contents = [ + "LIBRARY %s" % os.path.basename(output_filename), + "EXPORTS"] + for sym in export_symbols: + contents.append(sym) + self.execute(write_file, (def_file, contents), + "writing %s" % def_file) + + # next add options for def-file and to creating import libraries + + # dllwrap uses different options than gcc/ld + if self.linker_dll == "dllwrap": + extra_preargs.extend(["--output-lib", lib_file]) + # for dllwrap we have to use a special option + extra_preargs.extend(["--def", def_file]) + # we use gcc/ld here and can be sure ld is >= 2.9.10 + else: + # doesn't work: bfd_close build\...\libfoo.a: Invalid operation + #extra_preargs.extend(["-Wl,--out-implib,%s" % lib_file]) + # for gcc/ld the def-file is specified as any object files + objects.append(def_file) + + #end: if ((export_symbols is not None) and + # (target_desc != self.EXECUTABLE or self.linker_dll == "gcc")): + + # who wants symbols and a many times larger output file + # should explicitly switch the debug mode on + # otherwise we let dllwrap/ld strip the output file + # (On my machine: 10KB < stripped_file < ??100KB + # unstripped_file = stripped_file + XXX KB + # ( XXX=254 for a typical python extension)) + if not debug: + extra_preargs.append("-s") + + UnixCCompiler.link(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) + + # link () + + # -- Miscellaneous methods ----------------------------------------- + + # overwrite the one from CCompiler to support rc and res-files + 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: + # FIXME: "bogus checks for suffix" - as example the commented + # by #BOGUS# code break valid assembler suffix ".S" ! + #BOGUS## use normcase to make sure '.rc' is really '.rc' and not '.RC' + #BOGUS#base, ext = os.path.splitext(os.path.normcase(src_name)) + base, ext = os.path.splitext (src_name) + ext_normcase = os.path.normcase(ext) + if ext_normcase in ['.rc','.res']: + ext = ext_normcase + if ext not in (self.src_extensions + ['.rc','.res']): + raise UnknownFileError, \ + "unknown file type '%s' (from '%s')" % \ + (ext, src_name) + base = os.path.splitdrive(base)[1] # Chop off the drive + base = base[os.path.isabs(base):] # If abs, chop off leading / + 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 () + +# class CygwinCCompiler + + +# the same as cygwin plus some additional parameters +class Mingw32CCompiler (CygwinCCompiler): + + 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 = '' + + self.set_executables(compiler='gcc -mno-cygwin -O -Wall', + compiler_so='gcc -mno-cygwin -mdll -O -Wall', + compiler_cxx='g++ -mno-cygwin -O -Wall', + linker_exe='gcc -mno-cygwin', + linker_so='%s -mno-cygwin %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() + + # __init__ () + +# class Mingw32CCompiler + +# 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 a 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 (specifically, pyconfig.h) + 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) + try: + s = f.read() + finally: + 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 = os.environ.get('CC') or find_executable('gcc') + ld_exe = os.environ.get('LD') or find_executable('ld') + 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 + out = os.popen(gcc_exe + ' --print-prog-name ld','r') + ld_exe = out.read().decode('ascii').split()[0] + out.close() + else: + gcc_version = None + 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 = os.environ.get('DLLWRAP') or 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) |