| """distutils.emxccompiler |
| |
| Provides the EMXCCompiler class, a subclass of UnixCCompiler that |
| handles the EMX port of the GNU C compiler to OS/2. |
| """ |
| |
| # issues: |
| # |
| # * OS/2 insists that DLLs can have names no longer than 8 characters |
| # We put export_symbols in a def-file, as though the DLL can have |
| # an arbitrary length name, but truncate the output filename. |
| # |
| # * only use OMF objects and use LINK386 as the linker (-Zomf) |
| # |
| # * always build for multithreading (-Zmt) as the accompanying OS/2 port |
| # of Python is only distributed with threads enabled. |
| # |
| # tested configurations: |
| # |
| # * EMX gcc 2.81/EMX 0.9d fix03 |
| |
| 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 |
| |
| class EMXCCompiler (UnixCCompiler): |
| |
| compiler_type = 'emx' |
| obj_extension = ".obj" |
| static_lib_extension = ".lib" |
| shared_lib_extension = ".dll" |
| static_lib_format = "%s%s" |
| shared_lib_format = "%s%s" |
| res_extension = ".res" # compiled resource file |
| 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." % details) + |
| "Compiling may fail because of undefined preprocessor macros.") |
| |
| (self.gcc_version, self.ld_version) = \ |
| get_versions() |
| self.debug_print(self.compiler_type + ": gcc %s, ld %s\n" % |
| (self.gcc_version, |
| self.ld_version) ) |
| |
| # Hard-code GCC because that's what this is all about. |
| # XXX optimization, warnings etc. should be customizable. |
| self.set_executables(compiler='gcc -Zomf -Zmt -O3 -fomit-frame-pointer -mprobe -Wall', |
| compiler_so='gcc -Zomf -Zmt -O3 -fomit-frame-pointer -mprobe -Wall', |
| linker_exe='gcc -Zomf -Zmt -Zcrtdll', |
| linker_so='gcc -Zomf -Zmt -Zcrtdll -Zdll') |
| |
| # want the gcc library statically linked (so that we don't have |
| # to distribute a version dependent on the compiler we have) |
| self.dll_libraries=["gcc"] |
| |
| # __init__ () |
| |
| def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts): |
| if ext == '.rc': |
| # gcc requires '.rc' compiled to binary ('.res') files !!! |
| try: |
| self.spawn(["rc", "-r", src]) |
| except DistutilsExecError as 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 as 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)): |
| # (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") |
| |
| # Generate .def file |
| contents = [ |
| "LIBRARY %s INITINSTANCE TERMINSTANCE" % \ |
| os.path.splitext(os.path.basename(output_filename))[0], |
| "DATA MULTIPLE NONSHARED", |
| "EXPORTS"] |
| for sym in export_symbols: |
| contents.append(' "%s"' % sym) |
| self.execute(write_file, (def_file, contents), |
| "writing %s" % def_file) |
| |
| # next add options for def-file and to creating import libraries |
| # for gcc/ld the def-file is specified as any other 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 ----------------------------------------- |
| |
| # override the object_filenames method 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: |
| # use normcase to make sure '.rc' is really '.rc' and not '.RC' |
| (base, ext) = os.path.splitext (os.path.normcase(src_name)) |
| if ext not in (self.src_extensions + ['.rc']): |
| raise UnknownFileError("unknown file type '%s' (from '%s')" % \ |
| (ext, src_name)) |
| if strip_dir: |
| base = os.path.basename (base) |
| if ext == '.rc': |
| # these need to be compiled to object files |
| obj_names.append (os.path.join (output_dir, |
| base + self.res_extension)) |
| else: |
| obj_names.append (os.path.join (output_dir, |
| base + self.obj_extension)) |
| return obj_names |
| |
| # object_filenames () |
| |
| # override the find_library_file method from UnixCCompiler |
| # to deal with file naming/searching differences |
| def find_library_file(self, dirs, lib, debug=0): |
| shortlib = '%s.lib' % lib |
| longlib = 'lib%s.lib' % lib # this form very rare |
| |
| # get EMX's default library directory search path |
| try: |
| emx_dirs = os.environ['LIBRARY_PATH'].split(';') |
| except KeyError: |
| emx_dirs = [] |
| |
| for dir in dirs + emx_dirs: |
| shortlibp = os.path.join(dir, shortlib) |
| longlibp = os.path.join(dir, longlib) |
| if os.path.exists(shortlibp): |
| return shortlibp |
| elif os.path.exists(longlibp): |
| return longlibp |
| |
| # Oops, didn't find it in *any* of 'dirs' |
| return None |
| |
| # class EMXCCompiler |
| |
| |
| # 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 |
| # if sys.version contains GCC then python was compiled with |
| # GCC, and the pyconfig.h file should be OK |
| if sys.version.find("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 as 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 s.find("__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 and ld. |
| If not possible it returns None for it. |
| """ |
| from distutils.version import StrictVersion |
| from distutils.spawn import find_executable |
| import re |
| |
| gcc_exe = find_executable('gcc') |
| if gcc_exe: |
| out = os.popen(gcc_exe + ' -dumpversion','r') |
| try: |
| out_string = out.read() |
| finally: |
| out.close() |
| result = re.search('(\d+\.\d+\.\d+)', out_string, re.ASCII) |
| if result: |
| gcc_version = StrictVersion(result.group(1)) |
| else: |
| gcc_version = None |
| else: |
| gcc_version = None |
| # EMX ld has no way of reporting version number, and we use GCC |
| # anyway - so we can link OMF DLLs |
| ld_version = None |
| return (gcc_version, ld_version) |