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Diffstat (limited to 'Lib/packaging/compiler/ccompiler.py')
| -rw-r--r-- | Lib/packaging/compiler/ccompiler.py | 863 |
1 files changed, 863 insertions, 0 deletions
diff --git a/Lib/packaging/compiler/ccompiler.py b/Lib/packaging/compiler/ccompiler.py new file mode 100644 index 0000000..98c4b68 --- /dev/null +++ b/Lib/packaging/compiler/ccompiler.py @@ -0,0 +1,863 @@ +"""Abstract base class for compilers. + +This modules contains CCompiler, an abstract base class that defines the +interface for the compiler abstraction model used by packaging. +""" + +import os +from shutil import move +from packaging import logger +from packaging.util import split_quoted, execute, newer_group, spawn +from packaging.errors import (CompileError, LinkError, UnknownFileError) +from packaging.compiler import gen_preprocess_options + + +class CCompiler: + """Abstract base class to define the interface that must be implemented + by real compiler classes. Also has some utility methods used by + several compiler classes. + + The basic idea behind a compiler abstraction class is that each + instance can be used for all the compile/link steps in building a + single project. Thus, attributes common to all of those compile and + link steps -- include directories, macros to define, libraries to link + against, etc. -- are attributes of the compiler instance. To allow for + variability in how individual files are treated, most of those + attributes may be varied on a per-compilation or per-link basis. + """ + + # 'name' is a class attribute that identifies this class. It + # keeps code that wants to know what kind of compiler it's dealing with + # from having to import all possible compiler classes just to do an + # 'isinstance'. + name = None + description = None + + # XXX things not handled by this compiler abstraction model: + # * client can't provide additional options for a compiler, + # e.g. warning, optimization, debugging flags. Perhaps this + # should be the domain of concrete compiler abstraction classes + # (UnixCCompiler, MSVCCompiler, etc.) -- or perhaps the base + # class should have methods for the common ones. + # * can't completely override the include or library searchg + # path, ie. no "cc -I -Idir1 -Idir2" or "cc -L -Ldir1 -Ldir2". + # I'm not sure how widely supported this is even by Unix + # compilers, much less on other platforms. And I'm even less + # sure how useful it is; maybe for cross-compiling, but + # support for that is a ways off. (And anyways, cross + # compilers probably have a dedicated binary with the + # right paths compiled in. I hope.) + # * can't do really freaky things with the library list/library + # dirs, e.g. "-Ldir1 -lfoo -Ldir2 -lfoo" to link against + # different versions of libfoo.a in different locations. I + # think this is useless without the ability to null out the + # library search path anyways. + + + # Subclasses that rely on the standard filename generation methods + # implemented below should override these; see the comment near + # those methods ('object_filenames()' et. al.) for details: + src_extensions = None # list of strings + obj_extension = None # string + static_lib_extension = None + shared_lib_extension = None # string + static_lib_format = None # format string + shared_lib_format = None # prob. same as static_lib_format + exe_extension = None # string + + # Default language settings. language_map is used to detect a source + # file or Extension target language, checking source filenames. + # language_order is used to detect the language precedence, when deciding + # what language to use when mixing source types. For example, if some + # extension has two files with ".c" extension, and one with ".cpp", it + # is still linked as c++. + language_map = {".c": "c", + ".cc": "c++", + ".cpp": "c++", + ".cxx": "c++", + ".m": "objc", + } + language_order = ["c++", "objc", "c"] + + def __init__(self, dry_run=False, force=False): + self.dry_run = dry_run + self.force = force + + # 'output_dir': a common output directory for object, library, + # shared object, and shared library files + self.output_dir = None + + # 'macros': a list of macro definitions (or undefinitions). A + # macro definition is a 2-tuple (name, value), where the value is + # either a string or None (no explicit value). A macro + # undefinition is a 1-tuple (name,). + self.macros = [] + + # 'include_dirs': a list of directories to search for include files + self.include_dirs = [] + + # 'libraries': a list of libraries to include in any link + # (library names, not filenames: eg. "foo" not "libfoo.a") + self.libraries = [] + + # 'library_dirs': a list of directories to search for libraries + self.library_dirs = [] + + # 'runtime_library_dirs': a list of directories to search for + # shared libraries/objects at runtime + self.runtime_library_dirs = [] + + # 'objects': a list of object files (or similar, such as explicitly + # named library files) to include on any link + self.objects = [] + + for key, value in self.executables.items(): + self.set_executable(key, value) + + def set_executables(self, **args): + """Define the executables (and options for them) that will be run + to perform the various stages of compilation. The exact set of + executables that may be specified here depends on the compiler + class (via the 'executables' class attribute), but most will have: + compiler the C/C++ compiler + linker_so linker used to create shared objects and libraries + linker_exe linker used to create binary executables + archiver static library creator + + On platforms with a command line (Unix, DOS/Windows), each of these + is a string that will be split into executable name and (optional) + list of arguments. (Splitting the string is done similarly to how + Unix shells operate: words are delimited by spaces, but quotes and + backslashes can override this. See + 'distutils.util.split_quoted()'.) + """ + + # Note that some CCompiler implementation classes will define class + # attributes 'cpp', 'cc', etc. with hard-coded executable names; + # this is appropriate when a compiler class is for exactly one + # compiler/OS combination (eg. MSVCCompiler). Other compiler + # classes (UnixCCompiler, in particular) are driven by information + # discovered at run-time, since there are many different ways to do + # basically the same things with Unix C compilers. + + for key, value in args.items(): + if key not in self.executables: + raise ValueError("unknown executable '%s' for class %s" % \ + (key, self.__class__.__name__)) + self.set_executable(key, value) + + def set_executable(self, key, value): + if isinstance(value, str): + setattr(self, key, split_quoted(value)) + else: + setattr(self, key, value) + + def _find_macro(self, name): + i = 0 + for defn in self.macros: + if defn[0] == name: + return i + i = i + 1 + return None + + def _check_macro_definitions(self, definitions): + """Ensures that every element of 'definitions' is a valid macro + definition, ie. either (name,value) 2-tuple or a (name,) tuple. Do + nothing if all definitions are OK, raise TypeError otherwise. + """ + for defn in definitions: + if not (isinstance(defn, tuple) and + (len(defn) == 1 or + (len(defn) == 2 and + (isinstance(defn[1], str) or defn[1] is None))) and + isinstance(defn[0], str)): + raise TypeError(("invalid macro definition '%s': " % defn) + \ + "must be tuple (string,), (string, string), or " + \ + "(string, None)") + + + # -- Bookkeeping methods ------------------------------------------- + + def define_macro(self, name, value=None): + """Define a preprocessor macro for all compilations driven by this + compiler object. The optional parameter 'value' should be a + string; if it is not supplied, then the macro will be defined + without an explicit value and the exact outcome depends on the + compiler used (XXX true? does ANSI say anything about this?) + """ + # Delete from the list of macro definitions/undefinitions if + # already there (so that this one will take precedence). + i = self._find_macro(name) + if i is not None: + del self.macros[i] + + defn = (name, value) + self.macros.append(defn) + + def undefine_macro(self, name): + """Undefine a preprocessor macro for all compilations driven by + this compiler object. If the same macro is defined by + 'define_macro()' and undefined by 'undefine_macro()' the last call + takes precedence (including multiple redefinitions or + undefinitions). If the macro is redefined/undefined on a + per-compilation basis (ie. in the call to 'compile()'), then that + takes precedence. + """ + # Delete from the list of macro definitions/undefinitions if + # already there (so that this one will take precedence). + i = self._find_macro(name) + if i is not None: + del self.macros[i] + + undefn = (name,) + self.macros.append(undefn) + + def add_include_dir(self, dir): + """Add 'dir' to the list of directories that will be searched for + header files. The compiler is instructed to search directories in + the order in which they are supplied by successive calls to + 'add_include_dir()'. + """ + self.include_dirs.append(dir) + + def set_include_dirs(self, dirs): + """Set the list of directories that will be searched to 'dirs' (a + list of strings). Overrides any preceding calls to + 'add_include_dir()'; subsequence calls to 'add_include_dir()' add + to the list passed to 'set_include_dirs()'. This does not affect + any list of standard include directories that the compiler may + search by default. + """ + self.include_dirs = dirs[:] + + def add_library(self, libname): + """Add 'libname' to the list of libraries that will be included in + all links driven by this compiler object. Note that 'libname' + should *not* be the name of a file containing a library, but the + name of the library itself: the actual filename will be inferred by + the linker, the compiler, or the compiler class (depending on the + platform). + + The linker will be instructed to link against libraries in the + order they were supplied to 'add_library()' and/or + 'set_libraries()'. It is perfectly valid to duplicate library + names; the linker will be instructed to link against libraries as + many times as they are mentioned. + """ + self.libraries.append(libname) + + def set_libraries(self, libnames): + """Set the list of libraries to be included in all links driven by + this compiler object to 'libnames' (a list of strings). This does + not affect any standard system libraries that the linker may + include by default. + """ + self.libraries = libnames[:] + + + def add_library_dir(self, dir): + """Add 'dir' to the list of directories that will be searched for + libraries specified to 'add_library()' and 'set_libraries()'. The + linker will be instructed to search for libraries in the order they + are supplied to 'add_library_dir()' and/or 'set_library_dirs()'. + """ + self.library_dirs.append(dir) + + def set_library_dirs(self, dirs): + """Set the list of library search directories to 'dirs' (a list of + strings). This does not affect any standard library search path + that the linker may search by default. + """ + self.library_dirs = dirs[:] + + def add_runtime_library_dir(self, dir): + """Add 'dir' to the list of directories that will be searched for + shared libraries at runtime. + """ + self.runtime_library_dirs.append(dir) + + def set_runtime_library_dirs(self, dirs): + """Set the list of directories to search for shared libraries at + runtime to 'dirs' (a list of strings). This does not affect any + standard search path that the runtime linker may search by + default. + """ + self.runtime_library_dirs = dirs[:] + + def add_link_object(self, object): + """Add 'object' to the list of object files (or analogues, such as + explicitly named library files or the output of "resource + compilers") to be included in every link driven by this compiler + object. + """ + self.objects.append(object) + + def set_link_objects(self, objects): + """Set the list of object files (or analogues) to be included in + every link to 'objects'. This does not affect any standard object + files that the linker may include by default (such as system + libraries). + """ + self.objects = objects[:] + + + # -- Private utility methods -------------------------------------- + # (here for the convenience of subclasses) + + # Helper method to prep compiler in subclass compile() methods + def _setup_compile(self, outdir, macros, incdirs, sources, depends, + extra): + """Process arguments and decide which source files to compile.""" + if outdir is None: + outdir = self.output_dir + elif not isinstance(outdir, str): + raise TypeError("'output_dir' must be a string or None") + + if macros is None: + macros = self.macros + elif isinstance(macros, list): + macros = macros + (self.macros or []) + else: + raise TypeError("'macros' (if supplied) must be a list of tuples") + + if incdirs is None: + incdirs = self.include_dirs + elif isinstance(incdirs, (list, tuple)): + incdirs = list(incdirs) + (self.include_dirs or []) + else: + raise TypeError( + "'include_dirs' (if supplied) must be a list of strings") + + if extra is None: + extra = [] + + # Get the list of expected output (object) files + objects = self.object_filenames(sources, + strip_dir=False, + output_dir=outdir) + assert len(objects) == len(sources) + + pp_opts = gen_preprocess_options(macros, incdirs) + + build = {} + for i in range(len(sources)): + src = sources[i] + obj = objects[i] + ext = os.path.splitext(src)[1] + self.mkpath(os.path.dirname(obj)) + build[obj] = (src, ext) + + return macros, objects, extra, pp_opts, build + + def _get_cc_args(self, pp_opts, debug, before): + # works for unixccompiler and cygwinccompiler + cc_args = pp_opts + ['-c'] + if debug: + cc_args[:0] = ['-g'] + if before: + cc_args[:0] = before + return cc_args + + def _fix_compile_args(self, output_dir, macros, include_dirs): + """Typecheck and fix-up some of the arguments to the 'compile()' + method, and return fixed-up values. Specifically: if 'output_dir' + is None, replaces it with 'self.output_dir'; ensures that 'macros' + is a list, and augments it with 'self.macros'; ensures that + 'include_dirs' is a list, and augments it with 'self.include_dirs'. + Guarantees that the returned values are of the correct type, + i.e. for 'output_dir' either string or None, and for 'macros' and + 'include_dirs' either list or None. + """ + if output_dir is None: + output_dir = self.output_dir + elif not isinstance(output_dir, str): + raise TypeError("'output_dir' must be a string or None") + + if macros is None: + macros = self.macros + elif isinstance(macros, list): + macros = macros + (self.macros or []) + else: + raise TypeError("'macros' (if supplied) must be a list of tuples") + + if include_dirs is None: + include_dirs = self.include_dirs + elif isinstance(include_dirs, (list, tuple)): + include_dirs = list(include_dirs) + (self.include_dirs or []) + else: + raise TypeError( + "'include_dirs' (if supplied) must be a list of strings") + + return output_dir, macros, include_dirs + + def _fix_object_args(self, objects, output_dir): + """Typecheck and fix up some arguments supplied to various methods. + Specifically: ensure that 'objects' is a list; if output_dir is + None, replace with self.output_dir. Return fixed versions of + 'objects' and 'output_dir'. + """ + if not isinstance(objects, (list, tuple)): + raise TypeError("'objects' must be a list or tuple of strings") + objects = list(objects) + + if output_dir is None: + output_dir = self.output_dir + elif not isinstance(output_dir, str): + raise TypeError("'output_dir' must be a string or None") + + return objects, output_dir + + def _fix_lib_args(self, libraries, library_dirs, runtime_library_dirs): + """Typecheck and fix up some of the arguments supplied to the + 'link_*' methods. Specifically: ensure that all arguments are + lists, and augment them with their permanent versions + (eg. 'self.libraries' augments 'libraries'). Return a tuple with + fixed versions of all arguments. + """ + if libraries is None: + libraries = self.libraries + elif isinstance(libraries, (list, tuple)): + libraries = list(libraries) + (self.libraries or []) + else: + raise TypeError( + "'libraries' (if supplied) must be a list of strings") + + if library_dirs is None: + library_dirs = self.library_dirs + elif isinstance(library_dirs, (list, tuple)): + library_dirs = list(library_dirs) + (self.library_dirs or []) + else: + raise TypeError( + "'library_dirs' (if supplied) must be a list of strings") + + if runtime_library_dirs is None: + runtime_library_dirs = self.runtime_library_dirs + elif isinstance(runtime_library_dirs, (list, tuple)): + runtime_library_dirs = (list(runtime_library_dirs) + + (self.runtime_library_dirs or [])) + else: + raise TypeError("'runtime_library_dirs' (if supplied) " + "must be a list of strings") + + return libraries, library_dirs, runtime_library_dirs + + def _need_link(self, objects, output_file): + """Return true if we need to relink the files listed in 'objects' + to recreate 'output_file'. + """ + if self.force: + return True + else: + if self.dry_run: + newer = newer_group(objects, output_file, missing='newer') + else: + newer = newer_group(objects, output_file) + return newer + + def detect_language(self, sources): + """Detect the language of a given file, or list of files. Uses + language_map, and language_order to do the job. + """ + if not isinstance(sources, list): + sources = [sources] + lang = None + index = len(self.language_order) + for source in sources: + base, ext = os.path.splitext(source) + extlang = self.language_map.get(ext) + try: + extindex = self.language_order.index(extlang) + if extindex < index: + lang = extlang + index = extindex + except ValueError: + pass + return lang + + # -- Worker methods ------------------------------------------------ + # (must be implemented by subclasses) + + def preprocess(self, source, output_file=None, macros=None, + include_dirs=None, extra_preargs=None, extra_postargs=None): + """Preprocess a single C/C++ source file, named in 'source'. + Output will be written to file named 'output_file', or stdout if + 'output_file' not supplied. 'macros' is a list of macro + definitions as for 'compile()', which will augment the macros set + with 'define_macro()' and 'undefine_macro()'. 'include_dirs' is a + list of directory names that will be added to the default list. + + Raises PreprocessError on failure. + """ + pass + + def compile(self, sources, output_dir=None, macros=None, + include_dirs=None, debug=False, extra_preargs=None, + extra_postargs=None, depends=None): + """Compile one or more source files. + + 'sources' must be a list of filenames, most likely C/C++ + files, but in reality anything that can be handled by a + particular compiler and compiler class (eg. MSVCCompiler can + handle resource files in 'sources'). Return a list of object + filenames, one per source filename in 'sources'. Depending on + the implementation, not all source files will necessarily be + compiled, but all corresponding object filenames will be + returned. + + If 'output_dir' is given, object files will be put under it, while + retaining their original path component. That is, "foo/bar.c" + normally compiles to "foo/bar.o" (for a Unix implementation); if + 'output_dir' is "build", then it would compile to + "build/foo/bar.o". + + 'macros', if given, must be a list of macro definitions. A macro + definition is either a (name, value) 2-tuple or a (name,) 1-tuple. + The former defines a macro; if the value is None, the macro is + defined without an explicit value. The 1-tuple case undefines a + macro. Later definitions/redefinitions/ undefinitions take + precedence. + + 'include_dirs', if given, must be a list of strings, the + directories to add to the default include file search path for this + compilation only. + + 'debug' is a boolean; if true, the compiler will be instructed to + output debug symbols in (or alongside) the object file(s). + + 'extra_preargs' and 'extra_postargs' are implementation- dependent. + On platforms that have the notion of a command line (e.g. Unix, + DOS/Windows), they are most likely lists of strings: extra + command-line arguments to prepand/append to the compiler command + line. On other platforms, consult the implementation class + documentation. In any event, they are intended as an escape hatch + for those occasions when the abstract compiler framework doesn't + cut the mustard. + + 'depends', if given, is a list of filenames that all targets + depend on. If a source file is older than any file in + depends, then the source file will be recompiled. This + supports dependency tracking, but only at a coarse + granularity. + + Raises CompileError on failure. + """ + # A concrete compiler class can either override this method + # entirely or implement _compile(). + + macros, objects, extra_postargs, pp_opts, build = \ + self._setup_compile(output_dir, macros, include_dirs, sources, + depends, extra_postargs) + cc_args = self._get_cc_args(pp_opts, debug, extra_preargs) + + for obj in objects: + try: + src, ext = build[obj] + except KeyError: + continue + self._compile(obj, src, ext, cc_args, extra_postargs, pp_opts) + + # Return *all* object filenames, not just the ones we just built. + return objects + + def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts): + """Compile 'src' to product 'obj'.""" + + # A concrete compiler class that does not override compile() + # should implement _compile(). + pass + + def create_static_lib(self, objects, output_libname, output_dir=None, + debug=False, target_lang=None): + """Link a bunch of stuff together to create a static library file. + The "bunch of stuff" consists of the list of object files supplied + as 'objects', the extra object files supplied to + 'add_link_object()' and/or 'set_link_objects()', the libraries + supplied to 'add_library()' and/or 'set_libraries()', and the + libraries supplied as 'libraries' (if any). + + 'output_libname' should be a library name, not a filename; the + filename will be inferred from the library name. 'output_dir' is + the directory where the library file will be put. + + 'debug' is a boolean; if true, debugging information will be + included in the library (note that on most platforms, it is the + compile step where this matters: the 'debug' flag is included here + just for consistency). + + 'target_lang' is the target language for which the given objects + are being compiled. This allows specific linkage time treatment of + certain languages. + + Raises LibError on failure. + """ + pass + + # values for target_desc parameter in link() + SHARED_OBJECT = "shared_object" + SHARED_LIBRARY = "shared_library" + EXECUTABLE = "executable" + + def link(self, target_desc, objects, output_filename, output_dir=None, + libraries=None, library_dirs=None, runtime_library_dirs=None, + export_symbols=None, debug=False, extra_preargs=None, + extra_postargs=None, build_temp=None, target_lang=None): + """Link a bunch of stuff together to create an executable or + shared library file. + + The "bunch of stuff" consists of the list of object files supplied + as 'objects'. 'output_filename' should be a filename. If + 'output_dir' is supplied, 'output_filename' is relative to it + (i.e. 'output_filename' can provide directory components if + needed). + + 'libraries' is a list of libraries to link against. These are + library names, not filenames, since they're translated into + filenames in a platform-specific way (eg. "foo" becomes "libfoo.a" + on Unix and "foo.lib" on DOS/Windows). However, they can include a + directory component, which means the linker will look in that + specific directory rather than searching all the normal locations. + + 'library_dirs', if supplied, should be a list of directories to + search for libraries that were specified as bare library names + (ie. no directory component). These are on top of the system + default and those supplied to 'add_library_dir()' and/or + 'set_library_dirs()'. 'runtime_library_dirs' is a list of + directories that will be embedded into the shared library and used + to search for other shared libraries that *it* depends on at + run-time. (This may only be relevant on Unix.) + + 'export_symbols' is a list of symbols that the shared library will + export. (This appears to be relevant only on Windows.) + + 'debug' is as for 'compile()' and 'create_static_lib()', with the + slight distinction that it actually matters on most platforms (as + opposed to 'create_static_lib()', which includes a 'debug' flag + mostly for form's sake). + + 'extra_preargs' and 'extra_postargs' are as for 'compile()' (except + of course that they supply command-line arguments for the + particular linker being used). + + 'target_lang' is the target language for which the given objects + are being compiled. This allows specific linkage time treatment of + certain languages. + + Raises LinkError on failure. + """ + raise NotImplementedError + + + # Old 'link_*()' methods, rewritten to use the new 'link()' method. + + def link_shared_lib(self, objects, output_libname, output_dir=None, + libraries=None, library_dirs=None, + runtime_library_dirs=None, export_symbols=None, + debug=False, extra_preargs=None, extra_postargs=None, + build_temp=None, target_lang=None): + self.link(CCompiler.SHARED_LIBRARY, objects, + self.library_filename(output_libname, lib_type='shared'), + output_dir, + libraries, library_dirs, runtime_library_dirs, + export_symbols, debug, + extra_preargs, extra_postargs, build_temp, target_lang) + + def link_shared_object(self, objects, output_filename, output_dir=None, + libraries=None, library_dirs=None, + runtime_library_dirs=None, export_symbols=None, + debug=False, extra_preargs=None, extra_postargs=None, + build_temp=None, target_lang=None): + self.link(CCompiler.SHARED_OBJECT, objects, + output_filename, output_dir, + libraries, library_dirs, runtime_library_dirs, + export_symbols, debug, + extra_preargs, extra_postargs, build_temp, target_lang) + + def link_executable(self, objects, output_progname, output_dir=None, + libraries=None, library_dirs=None, + runtime_library_dirs=None, debug=False, + extra_preargs=None, extra_postargs=None, + target_lang=None): + self.link(CCompiler.EXECUTABLE, objects, + self.executable_filename(output_progname), output_dir, + libraries, library_dirs, runtime_library_dirs, None, + debug, extra_preargs, extra_postargs, None, target_lang) + + + # -- Miscellaneous methods ----------------------------------------- + # These are all used by the 'gen_lib_options() function; there is + # no appropriate default implementation so subclasses should + # implement all of these. + + def library_dir_option(self, dir): + """Return the compiler option to add 'dir' to the list of + directories searched for libraries. + """ + raise NotImplementedError + + def runtime_library_dir_option(self, dir): + """Return the compiler option to add 'dir' to the list of + directories searched for runtime libraries. + """ + raise NotImplementedError + + def library_option(self, lib): + """Return the compiler option to add 'dir' to the list of libraries + linked into the shared library or executable. + """ + raise NotImplementedError + + def has_function(self, funcname, includes=None, include_dirs=None, + libraries=None, library_dirs=None): + """Return a boolean indicating whether funcname is supported on + the current platform. The optional arguments can be used to + augment the compilation environment. + """ + + # this can't be included at module scope because it tries to + # import math which might not be available at that point - maybe + # the necessary logic should just be inlined? + import tempfile + if includes is None: + includes = [] + if include_dirs is None: + include_dirs = [] + if libraries is None: + libraries = [] + if library_dirs is None: + library_dirs = [] + fd, fname = tempfile.mkstemp(".c", funcname, text=True) + with os.fdopen(fd, "w") as f: + for incl in includes: + f.write("""#include "%s"\n""" % incl) + f.write("""\ +main (int argc, char **argv) { + %s(); +} +""" % funcname) + try: + objects = self.compile([fname], include_dirs=include_dirs) + except CompileError: + return False + + try: + self.link_executable(objects, "a.out", + libraries=libraries, + library_dirs=library_dirs) + except (LinkError, TypeError): + return False + return True + + def find_library_file(self, dirs, lib, debug=False): + """Search the specified list of directories for a static or shared + library file 'lib' and return the full path to that file. If + 'debug' is true, look for a debugging version (if that makes sense on + the current platform). Return None if 'lib' wasn't found in any of + the specified directories. + """ + raise NotImplementedError + + # -- Filename generation methods ----------------------------------- + + # The default implementation of the filename generating methods are + # prejudiced towards the Unix/DOS/Windows view of the world: + # * object files are named by replacing the source file extension + # (eg. .c/.cpp -> .o/.obj) + # * library files (shared or static) are named by plugging the + # library name and extension into a format string, eg. + # "lib%s.%s" % (lib_name, ".a") for Unix static libraries + # * executables are named by appending an extension (possibly + # empty) to the program name: eg. progname + ".exe" for + # Windows + # + # To reduce redundant code, these methods expect to find + # several attributes in the current object (presumably defined + # as class attributes): + # * src_extensions - + # list of C/C++ source file extensions, eg. ['.c', '.cpp'] + # * obj_extension - + # object file extension, eg. '.o' or '.obj' + # * static_lib_extension - + # extension for static library files, eg. '.a' or '.lib' + # * shared_lib_extension - + # extension for shared library/object files, eg. '.so', '.dll' + # * static_lib_format - + # format string for generating static library filenames, + # eg. 'lib%s.%s' or '%s.%s' + # * shared_lib_format + # format string for generating shared library filenames + # (probably same as static_lib_format, since the extension + # is one of the intended parameters to the format string) + # * exe_extension - + # extension for executable files, eg. '' or '.exe' + + def object_filenames(self, source_filenames, strip_dir=False, output_dir=''): + if output_dir is None: + output_dir = '' + obj_names = [] + for src_name in source_filenames: + base, ext = os.path.splitext(src_name) + base = os.path.splitdrive(base)[1] # Chop off the drive + base = base[os.path.isabs(base):] # If abs, chop off leading / + if ext not in self.src_extensions: + raise UnknownFileError("unknown file type '%s' (from '%s')" % + (ext, src_name)) + if strip_dir: + base = os.path.basename(base) + obj_names.append(os.path.join(output_dir, + base + self.obj_extension)) + return obj_names + + def shared_object_filename(self, basename, strip_dir=False, output_dir=''): + assert output_dir is not None + if strip_dir: + basename = os.path.basename(basename) + return os.path.join(output_dir, basename + self.shared_lib_extension) + + def executable_filename(self, basename, strip_dir=False, output_dir=''): + assert output_dir is not None + if strip_dir: + basename = os.path.basename(basename) + return os.path.join(output_dir, basename + (self.exe_extension or '')) + + def library_filename(self, libname, lib_type='static', # or 'shared' + strip_dir=False, output_dir=''): + assert output_dir is not None + if lib_type not in ("static", "shared", "dylib"): + raise ValueError( + "'lib_type' must be 'static', 'shared' or 'dylib'") + fmt = getattr(self, lib_type + "_lib_format") + ext = getattr(self, lib_type + "_lib_extension") + + dir, base = os.path.split(libname) + filename = fmt % (base, ext) + if strip_dir: + dir = '' + + return os.path.join(output_dir, dir, filename) + + + # -- Utility methods ----------------------------------------------- + + def execute(self, func, args, msg=None, level=1): + execute(func, args, msg, self.dry_run) + + def spawn(self, cmd): + spawn(cmd, dry_run=self.dry_run) + + def move_file(self, src, dst): + logger.info("moving %r to %r", src, dst) + if self.dry_run: + return + return move(src, dst) + + def mkpath(self, name, mode=0o777): + name = os.path.normpath(name) + if os.path.isdir(name) or name == '': + return + if self.dry_run: + head = '' + for part in name.split(os.sep): + logger.info("created directory %s%s", head, part) + head += part + os.sep + return + os.makedirs(name, mode) |