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Diffstat (limited to 'third_party/python/setuptools/setuptools/_distutils/unixccompiler.py')
| -rw-r--r-- | third_party/python/setuptools/setuptools/_distutils/unixccompiler.py | 328 |
1 files changed, 328 insertions, 0 deletions
diff --git a/third_party/python/setuptools/setuptools/_distutils/unixccompiler.py b/third_party/python/setuptools/setuptools/_distutils/unixccompiler.py new file mode 100644 index 0000000000..4d7a6de740 --- /dev/null +++ b/third_party/python/setuptools/setuptools/_distutils/unixccompiler.py @@ -0,0 +1,328 @@ +"""distutils.unixccompiler + +Contains the UnixCCompiler class, a subclass of CCompiler that handles +the "typical" Unix-style command-line C compiler: + * macros defined with -Dname[=value] + * macros undefined with -Uname + * include search directories specified with -Idir + * libraries specified with -lllib + * library search directories specified with -Ldir + * compile handled by 'cc' (or similar) executable with -c option: + compiles .c to .o + * link static library handled by 'ar' command (possibly with 'ranlib') + * link shared library handled by 'cc -shared' +""" + +import os, sys, re + +from distutils import sysconfig +from distutils.dep_util import newer +from distutils.ccompiler import \ + CCompiler, gen_preprocess_options, gen_lib_options +from distutils.errors import \ + DistutilsExecError, CompileError, LibError, LinkError +from distutils import log + +if sys.platform == 'darwin': + import _osx_support + +# XXX Things not currently handled: +# * optimization/debug/warning flags; we just use whatever's in Python's +# Makefile and live with it. Is this adequate? If not, we might +# have to have a bunch of subclasses GNUCCompiler, SGICCompiler, +# SunCCompiler, and I suspect down that road lies madness. +# * even if we don't know a warning flag from an optimization flag, +# we need some way for outsiders to feed preprocessor/compiler/linker +# flags in to us -- eg. a sysadmin might want to mandate certain flags +# via a site config file, or a user might want to set something for +# compiling this module distribution only via the setup.py command +# line, whatever. As long as these options come from something on the +# current system, they can be as system-dependent as they like, and we +# should just happily stuff them into the preprocessor/compiler/linker +# options and carry on. + + +class UnixCCompiler(CCompiler): + + compiler_type = 'unix' + + # These are used by CCompiler in two places: the constructor sets + # instance attributes 'preprocessor', 'compiler', etc. from them, and + # 'set_executable()' allows any of these to be set. The defaults here + # are pretty generic; they will probably have to be set by an outsider + # (eg. using information discovered by the sysconfig about building + # Python extensions). + executables = {'preprocessor' : None, + 'compiler' : ["cc"], + 'compiler_so' : ["cc"], + 'compiler_cxx' : ["cc"], + 'linker_so' : ["cc", "-shared"], + 'linker_exe' : ["cc"], + 'archiver' : ["ar", "-cr"], + 'ranlib' : None, + } + + if sys.platform[:6] == "darwin": + executables['ranlib'] = ["ranlib"] + + # Needed for the filename generation methods provided by the base + # class, CCompiler. NB. whoever instantiates/uses a particular + # UnixCCompiler instance should set 'shared_lib_ext' -- we set a + # reasonable common default here, but it's not necessarily used on all + # Unices! + + src_extensions = [".c",".C",".cc",".cxx",".cpp",".m"] + obj_extension = ".o" + static_lib_extension = ".a" + shared_lib_extension = ".so" + dylib_lib_extension = ".dylib" + xcode_stub_lib_extension = ".tbd" + static_lib_format = shared_lib_format = dylib_lib_format = "lib%s%s" + xcode_stub_lib_format = dylib_lib_format + if sys.platform == "cygwin": + exe_extension = ".exe" + + def preprocess(self, source, output_file=None, macros=None, + include_dirs=None, extra_preargs=None, extra_postargs=None): + fixed_args = self._fix_compile_args(None, macros, include_dirs) + ignore, macros, include_dirs = fixed_args + pp_opts = gen_preprocess_options(macros, include_dirs) + pp_args = self.preprocessor + pp_opts + if output_file: + pp_args.extend(['-o', output_file]) + if extra_preargs: + pp_args[:0] = extra_preargs + if extra_postargs: + pp_args.extend(extra_postargs) + pp_args.append(source) + + # We need to preprocess: either we're being forced to, or we're + # generating output to stdout, or there's a target output file and + # the source file is newer than the target (or the target doesn't + # exist). + if self.force or output_file is None or newer(source, output_file): + if output_file: + self.mkpath(os.path.dirname(output_file)) + try: + self.spawn(pp_args) + except DistutilsExecError as msg: + raise CompileError(msg) + + def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts): + compiler_so = self.compiler_so + if sys.platform == 'darwin': + compiler_so = _osx_support.compiler_fixup(compiler_so, + cc_args + extra_postargs) + try: + self.spawn(compiler_so + cc_args + [src, '-o', obj] + + extra_postargs) + except DistutilsExecError as msg: + raise CompileError(msg) + + def create_static_lib(self, objects, output_libname, + output_dir=None, debug=0, target_lang=None): + objects, output_dir = self._fix_object_args(objects, output_dir) + + output_filename = \ + self.library_filename(output_libname, output_dir=output_dir) + + if self._need_link(objects, output_filename): + self.mkpath(os.path.dirname(output_filename)) + self.spawn(self.archiver + + [output_filename] + + objects + self.objects) + + # Not many Unices required ranlib anymore -- SunOS 4.x is, I + # think the only major Unix that does. Maybe we need some + # platform intelligence here to skip ranlib if it's not + # needed -- or maybe Python's configure script took care of + # it for us, hence the check for leading colon. + if self.ranlib: + try: + self.spawn(self.ranlib + [output_filename]) + except DistutilsExecError as msg: + raise LibError(msg) + else: + log.debug("skipping %s (up-to-date)", output_filename) + + 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): + objects, output_dir = self._fix_object_args(objects, output_dir) + fixed_args = self._fix_lib_args(libraries, library_dirs, + runtime_library_dirs) + libraries, library_dirs, runtime_library_dirs = fixed_args + + lib_opts = gen_lib_options(self, library_dirs, runtime_library_dirs, + libraries) + if not isinstance(output_dir, (str, type(None))): + raise TypeError("'output_dir' must be a string or None") + if output_dir is not None: + output_filename = os.path.join(output_dir, output_filename) + + if self._need_link(objects, output_filename): + ld_args = (objects + self.objects + + lib_opts + ['-o', output_filename]) + if debug: + ld_args[:0] = ['-g'] + if extra_preargs: + ld_args[:0] = extra_preargs + if extra_postargs: + ld_args.extend(extra_postargs) + self.mkpath(os.path.dirname(output_filename)) + try: + if target_desc == CCompiler.EXECUTABLE: + linker = self.linker_exe[:] + else: + linker = self.linker_so[:] + if target_lang == "c++" and self.compiler_cxx: + # skip over environment variable settings if /usr/bin/env + # is used to set up the linker's environment. + # This is needed on OSX. Note: this assumes that the + # normal and C++ compiler have the same environment + # settings. + i = 0 + if os.path.basename(linker[0]) == "env": + i = 1 + while '=' in linker[i]: + i += 1 + + if os.path.basename(linker[i]) == 'ld_so_aix': + # AIX platforms prefix the compiler with the ld_so_aix + # script, so we need to adjust our linker index + offset = 1 + else: + offset = 0 + + linker[i+offset] = self.compiler_cxx[i] + + if sys.platform == 'darwin': + linker = _osx_support.compiler_fixup(linker, ld_args) + + self.spawn(linker + ld_args) + except DistutilsExecError as msg: + raise LinkError(msg) + else: + log.debug("skipping %s (up-to-date)", output_filename) + + # -- Miscellaneous methods ----------------------------------------- + # These are all used by the 'gen_lib_options() function, in + # ccompiler.py. + + def library_dir_option(self, dir): + return "-L" + dir + + def _is_gcc(self, compiler_name): + return "gcc" in compiler_name or "g++" in compiler_name + + def runtime_library_dir_option(self, dir): + # XXX Hackish, at the very least. See Python bug #445902: + # http://sourceforge.net/tracker/index.php + # ?func=detail&aid=445902&group_id=5470&atid=105470 + # Linkers on different platforms need different options to + # specify that directories need to be added to the list of + # directories searched for dependencies when a dynamic library + # is sought. GCC on GNU systems (Linux, FreeBSD, ...) has to + # be told to pass the -R option through to the linker, whereas + # other compilers and gcc on other systems just know this. + # Other compilers may need something slightly different. At + # this time, there's no way to determine this information from + # the configuration data stored in the Python installation, so + # we use this hack. + compiler = os.path.basename(sysconfig.get_config_var("CC")) + if sys.platform[:6] == "darwin": + # MacOSX's linker doesn't understand the -R flag at all + return "-L" + dir + elif sys.platform[:7] == "freebsd": + return "-Wl,-rpath=" + dir + elif sys.platform[:5] == "hp-ux": + if self._is_gcc(compiler): + return ["-Wl,+s", "-L" + dir] + return ["+s", "-L" + dir] + else: + if self._is_gcc(compiler): + # gcc on non-GNU systems does not need -Wl, but can + # use it anyway. Since distutils has always passed in + # -Wl whenever gcc was used in the past it is probably + # safest to keep doing so. + if sysconfig.get_config_var("GNULD") == "yes": + # GNU ld needs an extra option to get a RUNPATH + # instead of just an RPATH. + return "-Wl,--enable-new-dtags,-R" + dir + else: + return "-Wl,-R" + dir + else: + # No idea how --enable-new-dtags would be passed on to + # ld if this system was using GNU ld. Don't know if a + # system like this even exists. + return "-R" + dir + + def library_option(self, lib): + return "-l" + lib + + def find_library_file(self, dirs, lib, debug=0): + shared_f = self.library_filename(lib, lib_type='shared') + dylib_f = self.library_filename(lib, lib_type='dylib') + xcode_stub_f = self.library_filename(lib, lib_type='xcode_stub') + static_f = self.library_filename(lib, lib_type='static') + + if sys.platform == 'darwin': + # On OSX users can specify an alternate SDK using + # '-isysroot', calculate the SDK root if it is specified + # (and use it further on) + # + # Note that, as of Xcode 7, Apple SDKs may contain textual stub + # libraries with .tbd extensions rather than the normal .dylib + # shared libraries installed in /. The Apple compiler tool + # chain handles this transparently but it can cause problems + # for programs that are being built with an SDK and searching + # for specific libraries. Callers of find_library_file need to + # keep in mind that the base filename of the returned SDK library + # file might have a different extension from that of the library + # file installed on the running system, for example: + # /Applications/Xcode.app/Contents/Developer/Platforms/ + # MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/ + # usr/lib/libedit.tbd + # vs + # /usr/lib/libedit.dylib + cflags = sysconfig.get_config_var('CFLAGS') + m = re.search(r'-isysroot\s*(\S+)', cflags) + if m is None: + sysroot = '/' + else: + sysroot = m.group(1) + + + + for dir in dirs: + shared = os.path.join(dir, shared_f) + dylib = os.path.join(dir, dylib_f) + static = os.path.join(dir, static_f) + xcode_stub = os.path.join(dir, xcode_stub_f) + + if sys.platform == 'darwin' and ( + dir.startswith('/System/') or ( + dir.startswith('/usr/') and not dir.startswith('/usr/local/'))): + + shared = os.path.join(sysroot, dir[1:], shared_f) + dylib = os.path.join(sysroot, dir[1:], dylib_f) + static = os.path.join(sysroot, dir[1:], static_f) + xcode_stub = os.path.join(sysroot, dir[1:], xcode_stub_f) + + # We're second-guessing the linker here, with not much hard + # data to go on: GCC seems to prefer the shared library, so I'm + # assuming that *all* Unix C compilers do. And of course I'm + # ignoring even GCC's "-static" option. So sue me. + if os.path.exists(dylib): + return dylib + elif os.path.exists(xcode_stub): + return xcode_stub + elif os.path.exists(shared): + return shared + elif os.path.exists(static): + return static + + # Oops, didn't find it in *any* of 'dirs' + return None |