| """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 | |
| __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 | |
| 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, 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)): | |
| # (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 | |
| 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 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) | |
| 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) |