mirror of https://github.com/python/cpython
103 lines
4.4 KiB
Python
103 lines
4.4 KiB
Python
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"""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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import os, sys, re
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from distutils.dep_util import newer
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from distutils.ccompiler import CCompiler, gen_preprocess_options
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from distutils.errors import DistutilsExecError, CompileError
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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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'compiler_cxx' : ["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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if sys.platform[:6] == "darwin":
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executables['ranlib'] = ["ranlib"]
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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",".m"]
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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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dylib_lib_extension = ".dylib"
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xcode_stub_lib_extension = ".tbd"
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static_lib_format = shared_lib_format = dylib_lib_format = "lib%s%s"
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xcode_stub_lib_format = dylib_lib_format
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if sys.platform == "cygwin":
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exe_extension = ".exe"
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def preprocess(self, source, output_file=None, macros=None,
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include_dirs=None, extra_preargs=None, extra_postargs=None):
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fixed_args = self._fix_compile_args(None, macros, include_dirs)
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ignore, macros, include_dirs = fixed_args
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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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pp_args.extend(extra_postargs)
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pp_args.append(source)
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# We need to preprocess: either we're being forced to, or we're
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# generating output to stdout, or there's a target output file and
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# the 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 is None or 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 as msg:
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raise CompileError(msg)
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