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- """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'
- """
-
- # created 1999/07/05, Greg Ward
-
- __revision__ = "$Id: unixccompiler.py,v 1.32 2000/09/27 02:08:14 gward Exp $"
-
- import string, re, os
- from types import *
- from copy import copy
- 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
-
- # 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"],
- 'linker_so' : ["cc", "-shared"],
- 'linker_exe' : ["cc"],
- 'archiver' : ["ar", "-cr"],
- 'ranlib' : None,
- }
-
- # 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"]
- obj_extension = ".o"
- static_lib_extension = ".a"
- shared_lib_extension = ".so"
- static_lib_format = shared_lib_format = "lib%s%s"
-
-
-
- def __init__ (self,
- verbose=0,
- dry_run=0,
- force=0):
- CCompiler.__init__ (self, verbose, dry_run, force)
-
-
- def preprocess (self,
- source,
- output_file=None,
- macros=None,
- include_dirs=None,
- extra_preargs=None,
- extra_postargs=None):
-
- (_, macros, include_dirs) = \
- self._fix_compile_args(None, macros, include_dirs)
- 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:
- extra_postargs.extend(extra_postargs)
-
- # We need to preprocess: either we're being forced to, or the
- # source file is newer than the target (or the target doesn't
- # exist).
- if self.force or (output_file and newer(source, output_file)):
- if output_file:
- self.mkpath(os.path.dirname(output_file))
- try:
- self.spawn(pp_args)
- except DistutilsExecError, msg:
- raise CompileError, msg
-
-
- def compile (self,
- sources,
- output_dir=None,
- macros=None,
- include_dirs=None,
- debug=0,
- extra_preargs=None,
- extra_postargs=None):
-
- (output_dir, macros, include_dirs) = \
- self._fix_compile_args(output_dir, macros, include_dirs)
- (objects, skip_sources) = self._prep_compile(sources, output_dir)
-
- # Figure out the options for the compiler command line.
- pp_opts = gen_preprocess_options(macros, include_dirs)
- cc_args = pp_opts + ['-c']
- if debug:
- cc_args[:0] = ['-g']
- if extra_preargs:
- cc_args[:0] = extra_preargs
- if extra_postargs is None:
- extra_postargs = []
-
- # Compile all source files that weren't eliminated by
- # '_prep_compile()'.
- for i in range(len(sources)):
- src = sources[i] ; obj = objects[i]
- if skip_sources[src]:
- self.announce("skipping %s (%s up-to-date)" % (src, obj))
- else:
- self.mkpath(os.path.dirname(obj))
- try:
- self.spawn(self.compiler_so + cc_args +
- [src, '-o', obj] +
- extra_postargs)
- except DistutilsExecError, msg:
- raise CompileError, msg
-
- # Return *all* object filenames, not just the ones we just built.
- return objects
-
- # compile ()
-
-
- def create_static_lib (self,
- objects,
- output_libname,
- output_dir=None,
- debug=0):
-
- (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, msg:
- raise LibError, msg
- else:
- self.announce("skipping %s (up-to-date)" % output_filename)
-
- # create_static_lib ()
-
-
- 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):
-
- (objects, output_dir) = self._fix_object_args(objects, output_dir)
- (libraries, library_dirs, runtime_library_dirs) = \
- self._fix_lib_args(libraries, library_dirs, runtime_library_dirs)
-
- lib_opts = gen_lib_options(self,
- library_dirs, runtime_library_dirs,
- libraries)
- if type(output_dir) not in (StringType, NoneType):
- 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:
- self.spawn(self.linker_exe + ld_args)
- else:
- self.spawn(self.linker_so + ld_args)
- except DistutilsExecError, msg:
- raise LinkError, msg
- else:
- self.announce("skipping %s (up-to-date)" % output_filename)
-
- # link ()
-
-
- # -- 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 runtime_library_dir_option (self, dir):
- return "-R" + dir
-
- def library_option (self, lib):
- return "-l" + lib
-
-
- def find_library_file (self, dirs, lib, debug=0):
-
- for dir in dirs:
- shared = os.path.join(
- dir, self.library_filename(lib, lib_type='shared'))
- static = os.path.join(
- dir, self.library_filename(lib, lib_type='static'))
-
- # 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(shared):
- return shared
- elif os.path.exists(static):
- return static
-
- else:
- # Oops, didn't find it in *any* of 'dirs'
- return None
-
- # find_library_file ()
-
- # class UnixCCompiler
-