| """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 |
| |
| __rcsid__ = "$Id$" |
| |
| import string, re, os |
| from types import * |
| from copy import copy |
| from sysconfig import \ |
| CC, CCSHARED, CFLAGS, OPT, LDSHARED, LDFLAGS, RANLIB, AR, SO |
| from ccompiler import CCompiler, gen_preprocess_options, gen_lib_options |
| from util import move_file, newer_pairwise, newer_group |
| |
| # 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): |
| |
| # XXX perhaps there should really be *three* kinds of include |
| # directories: those built in to the preprocessor, those from Python's |
| # Makefiles, and those supplied to {add,set}_include_dirs(). Currently |
| # we make no distinction between the latter two at this point; it's all |
| # up to the client class to select the include directories to use above |
| # and beyond the compiler's defaults. That is, both the Python include |
| # directories and any module- or package-specific include directories |
| # are specified via {add,set}_include_dirs(), and there's no way to |
| # distinguish them. This might be a bug. |
| |
| compiler_type = 'unix' |
| |
| _obj_ext = '.o' |
| _exe_ext = '' |
| _shared_lib_ext = SO |
| _static_lib_ext = '.a' |
| |
| def __init__ (self, |
| verbose=0, |
| dry_run=0): |
| |
| CCompiler.__init__ (self, verbose, dry_run) |
| |
| self.preprocess_options = None |
| self.compile_options = None |
| |
| # Munge CC and OPT together in case there are flags stuck in CC. |
| # Note that using these variables from sysconfig immediately makes |
| # this module specific to building Python extensions and |
| # inappropriate as a general-purpose C compiler front-end. So sue |
| # me. Note also that we use OPT rather than CFLAGS, because CFLAGS |
| # is the flags used to compile Python itself -- not only are there |
| # -I options in there, they are the *wrong* -I options. We'll |
| # leave selection of include directories up to the class using |
| # UnixCCompiler! |
| |
| (self.cc, self.ccflags) = \ |
| _split_command (CC + ' ' + OPT) |
| self.ccflags_shared = string.split (CCSHARED) |
| |
| (self.ld_shared, self.ldflags_shared) = \ |
| _split_command (LDSHARED) |
| |
| |
| def compile (self, |
| sources, |
| output_dir=None, |
| macros=None, |
| includes=None, |
| extra_preargs=None, |
| extra_postargs=None): |
| |
| if output_dir is None: |
| output_dir = self.output_dir |
| if macros is None: |
| macros = [] |
| if includes is None: |
| includes = [] |
| |
| if type (macros) is not ListType: |
| raise TypeError, \ |
| "'macros' (if supplied) must be a list of tuples" |
| if type (includes) is not ListType: |
| raise TypeError, \ |
| "'includes' (if supplied) must be a list of strings" |
| |
| pp_opts = gen_preprocess_options (self.macros + macros, |
| self.include_dirs + includes) |
| |
| # So we can mangle 'sources' without hurting the caller's data |
| orig_sources = sources |
| sources = copy (sources) |
| |
| # Get the list of expected output (object) files and drop files we |
| # don't have to recompile. (Simplistic check -- we just compare the |
| # source and object file, no deep dependency checking involving |
| # header files. Hmmm.) |
| objects = self.object_filenames (sources, output_dir) |
| skipped = newer_pairwise (sources, objects) |
| for skipped_pair in skipped: |
| self.announce ("skipping %s (%s up-to-date)" % skipped_pair) |
| |
| # If anything left to compile, compile it |
| if sources: |
| # XXX use of ccflags_shared means we're blithely assuming |
| # that we're compiling for inclusion in a shared object! |
| # (will have to fix this when I add the ability to build a |
| # new Python) |
| cc_args = ['-c'] + pp_opts + \ |
| self.ccflags + self.ccflags_shared + \ |
| sources |
| if extra_preargs: |
| cc_args[:0] = extra_preargs |
| if extra_postargs: |
| cc_args.extend (extra_postargs) |
| self.spawn ([self.cc] + cc_args) |
| |
| |
| # Note that compiling multiple source files in the same go like |
| # we've just done drops the .o file in the current directory, which |
| # may not be what the caller wants (depending on the 'output_dir' |
| # parameter). So, if necessary, fix that now by moving the .o |
| # files into the desired output directory. (The alternative, of |
| # course, is to compile one-at-a-time with a -o option. 6 of one, |
| # 12/2 of the other...) |
| |
| if output_dir: |
| for i in range (len (objects)): |
| src = os.path.basename (objects[i]) |
| objects[i] = self.move_file (src, output_dir) |
| |
| # Have to re-fetch list of object filenames, because we want to |
| # return *all* of them, including those that weren't recompiled on |
| # this call! |
| return self.object_filenames (orig_sources, output_dir) |
| |
| |
| # XXX punting on 'link_static_lib()' for now -- it might be better for |
| # CCompiler to mandate just 'link_binary()' or some such to build a new |
| # Python binary; it would then take care of linking in everything |
| # needed for the new Python without messing with an intermediate static |
| # library. |
| |
| def link_shared_lib (self, |
| objects, |
| output_libname, |
| output_dir=None, |
| libraries=None, |
| library_dirs=None, |
| extra_preargs=None, |
| extra_postargs=None): |
| # XXX should we sanity check the library name? (eg. no |
| # slashes) |
| self.link_shared_object ( |
| objects, |
| "lib%s%s" % (output_libname, self._shared_lib_ext), |
| output_dir, |
| libraries, |
| library_dirs, |
| extra_preargs, |
| extra_postargs) |
| |
| |
| def link_shared_object (self, |
| objects, |
| output_filename, |
| output_dir=None, |
| libraries=None, |
| library_dirs=None, |
| extra_preargs=None, |
| extra_postargs=None): |
| |
| if output_dir is None: |
| output_dir = self.output_dir |
| if libraries is None: |
| libraries = [] |
| if library_dirs is None: |
| library_dirs = [] |
| |
| lib_opts = gen_lib_options (self.library_dirs + library_dirs, |
| self.libraries + libraries, |
| "-L%s", "-l%s") |
| if output_dir is not None: |
| output_filename = os.path.join (output_dir, output_filename) |
| |
| # If any of the input object files are newer than the output shared |
| # object, relink. Again, this is a simplistic dependency check: |
| # doesn't look at any of the libraries we might be linking with. |
| # Note that we have to dance around errors comparing timestamps if |
| # we're in dry-run mode (yuck). |
| try: |
| newer = newer_group (objects, output_filename) |
| except OSError: |
| if self.dry_run: |
| newer = 1 |
| else: |
| raise |
| |
| if newer: |
| ld_args = self.ldflags_shared + lib_opts + \ |
| objects + ['-o', output_filename] |
| if extra_preargs: |
| ld_args[:0] = extra_preargs |
| if extra_postargs: |
| ld_args.extend (extra_postargs) |
| self.spawn ([self.ld_shared] + ld_args) |
| else: |
| self.announce ("skipping %s (up-to-date)" % output_filename) |
| |
| |
| def object_filenames (self, source_filenames, output_dir=None): |
| outnames = [] |
| for inname in source_filenames: |
| outname = re.sub (r'\.(c|C|cc|cxx|cpp)$', self._obj_ext, inname) |
| outname = os.path.basename (outname) |
| if output_dir is not None: |
| outname = os.path.join (output_dir, outname) |
| outnames.append (outname) |
| return outnames |
| |
| def shared_object_filename (self, source_filename, output_dir=None): |
| outname = re.sub (r'\.(c|C|cc|cxx|cpp)$', self._shared_lib_ext) |
| outname = os.path.basename (outname) |
| if output_dir is not None: |
| outname = os.path.join (output_dir, outname) |
| return outname |
| |
| def library_filename (self, libname): |
| return "lib%s%s" % (libname, self._static_lib_ext ) |
| |
| def shared_library_filename (self, libname): |
| return "lib%s%s" % (libname, self._shared_lib_ext ) |
| |
| # class UnixCCompiler |
| |
| |
| def _split_command (cmd): |
| """Split a command string up into the progam to run (a string) and |
| the list of arguments; return them as (cmd, arglist).""" |
| args = string.split (cmd) |
| return (args[0], args[1:]) |