280 lines
10 KiB
Python
280 lines
10 KiB
Python
"""distutils.unixccompiler
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Contains the UnixCCompiler class, a subclass of CCompiler that handles
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the "typical" Unix-style command-line C compiler:
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* macros defined with -Dname[=value]
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* macros undefined with -Uname
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* include search directories specified with -Idir
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* libraries specified with -lllib
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* library search directories specified with -Ldir
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* compile handled by 'cc' (or similar) executable with -c option:
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compiles .c to .o
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* link static library handled by 'ar' command (possibly with 'ranlib')
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* link shared library handled by 'cc -shared'
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"""
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# created 1999/07/05, Greg Ward
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__revision__ = "$Id$"
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import string, re, os
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from types import *
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from copy import copy
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from distutils.dep_util import newer
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from distutils.ccompiler import \
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CCompiler, gen_preprocess_options, gen_lib_options
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from distutils.errors import \
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DistutilsExecError, CompileError, LibError, LinkError
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# XXX Things not currently handled:
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# * optimization/debug/warning flags; we just use whatever's in Python's
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# Makefile and live with it. Is this adequate? If not, we might
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# have to have a bunch of subclasses GNUCCompiler, SGICCompiler,
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# SunCCompiler, and I suspect down that road lies madness.
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# * even if we don't know a warning flag from an optimization flag,
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# we need some way for outsiders to feed preprocessor/compiler/linker
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# flags in to us -- eg. a sysadmin might want to mandate certain flags
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# via a site config file, or a user might want to set something for
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# compiling this module distribution only via the setup.py command
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# line, whatever. As long as these options come from something on the
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# current system, they can be as system-dependent as they like, and we
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# should just happily stuff them into the preprocessor/compiler/linker
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# options and carry on.
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class UnixCCompiler (CCompiler):
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compiler_type = 'unix'
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# These are used by CCompiler in two places: the constructor sets
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# instance attributes 'preprocessor', 'compiler', etc. from them, and
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# 'set_executable()' allows any of these to be set. The defaults here
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# are pretty generic; they will probably have to be set by an outsider
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# (eg. using information discovered by the sysconfig about building
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# Python extensions).
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executables = {'preprocessor' : None,
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'compiler' : ["cc"],
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'compiler_so' : ["cc"],
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'linker_so' : ["cc", "-shared"],
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'linker_exe' : ["cc"],
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'archiver' : ["ar", "-cr"],
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'ranlib' : None,
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}
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# Needed for the filename generation methods provided by the base
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# class, CCompiler. NB. whoever instantiates/uses a particular
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# UnixCCompiler instance should set 'shared_lib_ext' -- we set a
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# reasonable common default here, but it's not necessarily used on all
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# Unices!
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src_extensions = [".c",".C",".cc",".cxx",".cpp"]
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obj_extension = ".o"
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static_lib_extension = ".a"
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shared_lib_extension = ".so"
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static_lib_format = shared_lib_format = "lib%s%s"
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def __init__ (self,
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verbose=0,
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dry_run=0,
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force=0):
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CCompiler.__init__ (self, verbose, dry_run, force)
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def preprocess (self,
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source,
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output_file=None,
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macros=None,
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include_dirs=None,
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extra_preargs=None,
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extra_postargs=None):
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(_, macros, include_dirs) = \
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self._fix_compile_args(None, macros, include_dirs)
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pp_opts = gen_preprocess_options(macros, include_dirs)
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pp_args = self.preprocessor + pp_opts
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if output_file:
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pp_args.extend(['-o', output_file])
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if extra_preargs:
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pp_args[:0] = extra_preargs
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if extra_postargs:
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extra_postargs.extend(extra_postargs)
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# We need to preprocess: either we're being forced to, or the
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# source file is newer than the target (or the target doesn't
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# exist).
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if self.force or (output_file and newer(source, output_file)):
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if output_file:
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self.mkpath(os.path.dirname(output_file))
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try:
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self.spawn(pp_args)
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except DistutilsExecError, msg:
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raise CompileError, msg
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def compile (self,
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sources,
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output_dir=None,
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macros=None,
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include_dirs=None,
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debug=0,
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extra_preargs=None,
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extra_postargs=None):
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(output_dir, macros, include_dirs) = \
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self._fix_compile_args(output_dir, macros, include_dirs)
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(objects, skip_sources) = self._prep_compile(sources, output_dir)
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# Figure out the options for the compiler command line.
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pp_opts = gen_preprocess_options(macros, include_dirs)
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cc_args = pp_opts + ['-c']
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if debug:
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cc_args[:0] = ['-g']
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if extra_preargs:
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cc_args[:0] = extra_preargs
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if extra_postargs is None:
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extra_postargs = []
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# Compile all source files that weren't eliminated by
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# '_prep_compile()'.
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for i in range(len(sources)):
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src = sources[i] ; obj = objects[i]
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if skip_sources[src]:
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self.announce("skipping %s (%s up-to-date)" % (src, obj))
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else:
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self.mkpath(os.path.dirname(obj))
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try:
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self.spawn(self.compiler_so + cc_args +
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[src, '-o', obj] +
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extra_postargs)
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except DistutilsExecError, msg:
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raise CompileError, msg
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# Return *all* object filenames, not just the ones we just built.
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return objects
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# compile ()
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def create_static_lib (self,
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objects,
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output_libname,
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output_dir=None,
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debug=0):
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(objects, output_dir) = self._fix_object_args(objects, output_dir)
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output_filename = \
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self.library_filename(output_libname, output_dir=output_dir)
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if self._need_link(objects, output_filename):
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self.mkpath(os.path.dirname(output_filename))
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self.spawn(self.archiver +
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[output_filename] +
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objects + self.objects)
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# Not many Unices required ranlib anymore -- SunOS 4.x is, I
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# think the only major Unix that does. Maybe we need some
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# platform intelligence here to skip ranlib if it's not
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# needed -- or maybe Python's configure script took care of
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# it for us, hence the check for leading colon.
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if self.ranlib:
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try:
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self.spawn(self.ranlib + [output_filename])
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except DistutilsExecError, msg:
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raise LibError, msg
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else:
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self.announce("skipping %s (up-to-date)" % output_filename)
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# create_static_lib ()
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def link (self,
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target_desc,
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objects,
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output_filename,
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output_dir=None,
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libraries=None,
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library_dirs=None,
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runtime_library_dirs=None,
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export_symbols=None,
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debug=0,
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extra_preargs=None,
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extra_postargs=None,
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build_temp=None):
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(objects, output_dir) = self._fix_object_args(objects, output_dir)
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(libraries, library_dirs, runtime_library_dirs) = \
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self._fix_lib_args(libraries, library_dirs, runtime_library_dirs)
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lib_opts = gen_lib_options(self,
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library_dirs, runtime_library_dirs,
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libraries)
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if type(output_dir) not in (StringType, NoneType):
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raise TypeError, "'output_dir' must be a string or None"
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if output_dir is not None:
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output_filename = os.path.join(output_dir, output_filename)
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if self._need_link(objects, output_filename):
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ld_args = (objects + self.objects +
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lib_opts + ['-o', output_filename])
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if debug:
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ld_args[:0] = ['-g']
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if extra_preargs:
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ld_args[:0] = extra_preargs
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if extra_postargs:
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ld_args.extend(extra_postargs)
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self.mkpath(os.path.dirname(output_filename))
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try:
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if target_desc == CCompiler.EXECUTABLE:
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self.spawn(self.linker_exe + ld_args)
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else:
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self.spawn(self.linker_so + ld_args)
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except DistutilsExecError, msg:
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raise LinkError, msg
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else:
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self.announce("skipping %s (up-to-date)" % output_filename)
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# link ()
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# -- Miscellaneous methods -----------------------------------------
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# These are all used by the 'gen_lib_options() function, in
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# ccompiler.py.
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def library_dir_option (self, dir):
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return "-L" + dir
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def runtime_library_dir_option (self, dir):
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return "-R" + dir
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def library_option (self, lib):
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return "-l" + lib
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def find_library_file (self, dirs, lib, debug=0):
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for dir in dirs:
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shared = os.path.join(
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dir, self.library_filename(lib, lib_type='shared'))
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static = os.path.join(
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dir, self.library_filename(lib, lib_type='static'))
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# We're second-guessing the linker here, with not much hard
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# data to go on: GCC seems to prefer the shared library, so I'm
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# assuming that *all* Unix C compilers do. And of course I'm
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# ignoring even GCC's "-static" option. So sue me.
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if os.path.exists(shared):
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return shared
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elif os.path.exists(static):
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return static
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else:
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# Oops, didn't find it in *any* of 'dirs'
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return None
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# find_library_file ()
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# class UnixCCompiler
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