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Diffstat (limited to 'lib/python2.7/distutils/emxccompiler.py')
| -rw-r--r-- | lib/python2.7/distutils/emxccompiler.py | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/lib/python2.7/distutils/emxccompiler.py b/lib/python2.7/distutils/emxccompiler.py new file mode 100644 index 0000000..a017205 --- /dev/null +++ b/lib/python2.7/distutils/emxccompiler.py @@ -0,0 +1,319 @@ +"""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) |