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Diffstat (limited to '.venv/lib/python3.12/site-packages/setuptools/_distutils/compilers/C/unix.py')
| -rw-r--r-- | .venv/lib/python3.12/site-packages/setuptools/_distutils/compilers/C/unix.py | 423 |
1 files changed, 423 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/setuptools/_distutils/compilers/C/unix.py b/.venv/lib/python3.12/site-packages/setuptools/_distutils/compilers/C/unix.py new file mode 100644 index 00000000..e8a53d45 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/setuptools/_distutils/compilers/C/unix.py @@ -0,0 +1,423 @@ +"""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' +""" + +from __future__ import annotations + +import itertools +import os +import re +import shlex +import sys +from collections.abc import Iterable + +from ... import sysconfig +from ..._log import log +from ..._macos_compat import compiler_fixup +from ..._modified import newer +from ...compat import consolidate_linker_args +from ...errors import DistutilsExecError +from . import base +from .base import _Macro, gen_lib_options, gen_preprocess_options +from .errors import ( + 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. + + +def _split_env(cmd): + """ + For macOS, split command into 'env' portion (if any) + and the rest of the linker command. + + >>> _split_env(['a', 'b', 'c']) + ([], ['a', 'b', 'c']) + >>> _split_env(['/usr/bin/env', 'A=3', 'gcc']) + (['/usr/bin/env', 'A=3'], ['gcc']) + """ + pivot = 0 + if os.path.basename(cmd[0]) == "env": + pivot = 1 + while '=' in cmd[pivot]: + pivot += 1 + return cmd[:pivot], cmd[pivot:] + + +def _split_aix(cmd): + """ + AIX platforms prefix the compiler with the ld_so_aix + script, so split that from the linker command. + + >>> _split_aix(['a', 'b', 'c']) + ([], ['a', 'b', 'c']) + >>> _split_aix(['/bin/foo/ld_so_aix', 'gcc']) + (['/bin/foo/ld_so_aix'], ['gcc']) + """ + pivot = os.path.basename(cmd[0]) == 'ld_so_aix' + return cmd[:pivot], cmd[pivot:] + + +def _linker_params(linker_cmd, compiler_cmd): + """ + The linker command usually begins with the compiler + command (possibly multiple elements), followed by zero or more + params for shared library building. + + If the LDSHARED env variable overrides the linker command, + however, the commands may not match. + + Return the best guess of the linker parameters by stripping + the linker command. If the compiler command does not + match the linker command, assume the linker command is + just the first element. + + >>> _linker_params('gcc foo bar'.split(), ['gcc']) + ['foo', 'bar'] + >>> _linker_params('gcc foo bar'.split(), ['other']) + ['foo', 'bar'] + >>> _linker_params('ccache gcc foo bar'.split(), 'ccache gcc'.split()) + ['foo', 'bar'] + >>> _linker_params(['gcc'], ['gcc']) + [] + """ + c_len = len(compiler_cmd) + pivot = c_len if linker_cmd[:c_len] == compiler_cmd else 1 + return linker_cmd[pivot:] + + +class Compiler(base.Compiler): + 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"], + 'compiler_cxx': ["c++"], + 'compiler_so_cxx': ["c++"], + 'linker_so': ["cc", "-shared"], + 'linker_so_cxx': ["c++", "-shared"], + 'linker_exe': ["cc"], + 'linker_exe_cxx': ["c++", "-shared"], + 'archiver': ["ar", "-cr"], + 'ranlib': None, + } + + if sys.platform[:6] == "darwin": + executables['ranlib'] = ["ranlib"] + + # 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", ".m"] + obj_extension = ".o" + static_lib_extension = ".a" + shared_lib_extension = ".so" + dylib_lib_extension = ".dylib" + xcode_stub_lib_extension = ".tbd" + static_lib_format = shared_lib_format = dylib_lib_format = "lib%s%s" + xcode_stub_lib_format = dylib_lib_format + if sys.platform == "cygwin": + exe_extension = ".exe" + shared_lib_extension = ".dll.a" + dylib_lib_extension = ".dll" + dylib_lib_format = "cyg%s%s" + + def _fix_lib_args(self, libraries, library_dirs, runtime_library_dirs): + """Remove standard library path from rpath""" + libraries, library_dirs, runtime_library_dirs = super()._fix_lib_args( + libraries, library_dirs, runtime_library_dirs + ) + libdir = sysconfig.get_config_var('LIBDIR') + if ( + runtime_library_dirs + and libdir.startswith("/usr/lib") + and (libdir in runtime_library_dirs) + ): + runtime_library_dirs.remove(libdir) + return libraries, library_dirs, runtime_library_dirs + + def preprocess( + self, + source: str | os.PathLike[str], + output_file: str | os.PathLike[str] | None = None, + macros: list[_Macro] | None = None, + include_dirs: list[str] | tuple[str, ...] | None = None, + extra_preargs: list[str] | None = None, + extra_postargs: Iterable[str] | None = None, + ): + fixed_args = self._fix_compile_args(None, macros, include_dirs) + ignore, macros, include_dirs = fixed_args + 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: + pp_args.extend(extra_postargs) + pp_args.append(source) + + # reasons to preprocess: + # - force is indicated + # - output is directed to stdout + # - source file is newer than the target + preprocess = self.force or output_file is None or newer(source, output_file) + if not preprocess: + return + + if output_file: + self.mkpath(os.path.dirname(output_file)) + + try: + self.spawn(pp_args) + except DistutilsExecError as msg: + raise CompileError(msg) + + def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts): + compiler_so = compiler_fixup(self.compiler_so, cc_args + extra_postargs) + compiler_so_cxx = compiler_fixup(self.compiler_so_cxx, cc_args + extra_postargs) + try: + if self.detect_language(src) == 'c++': + self.spawn( + compiler_so_cxx + cc_args + [src, '-o', obj] + extra_postargs + ) + else: + self.spawn(compiler_so + cc_args + [src, '-o', obj] + extra_postargs) + except DistutilsExecError as msg: + raise CompileError(msg) + + def create_static_lib( + self, objects, output_libname, output_dir=None, debug=False, target_lang=None + ): + 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 as msg: + raise LibError(msg) + else: + log.debug("skipping %s (up-to-date)", output_filename) + + def link( + self, + target_desc, + objects: list[str] | tuple[str, ...], + output_filename, + output_dir: str | None = None, + libraries: list[str] | tuple[str, ...] | None = None, + library_dirs: list[str] | tuple[str, ...] | None = None, + runtime_library_dirs: list[str] | tuple[str, ...] | None = None, + export_symbols=None, + debug=False, + extra_preargs=None, + extra_postargs=None, + build_temp=None, + target_lang=None, + ): + objects, output_dir = self._fix_object_args(objects, output_dir) + fixed_args = self._fix_lib_args(libraries, library_dirs, runtime_library_dirs) + libraries, library_dirs, runtime_library_dirs = fixed_args + + lib_opts = gen_lib_options(self, library_dirs, runtime_library_dirs, libraries) + if not isinstance(output_dir, (str, type(None))): + 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: + # Select a linker based on context: linker_exe when + # building an executable or linker_so (with shared options) + # when building a shared library. + building_exe = target_desc == base.Compiler.EXECUTABLE + linker = ( + self.linker_exe + if building_exe + else ( + self.linker_so_cxx if target_lang == "c++" else self.linker_so + ) + )[:] + + if target_lang == "c++" and self.compiler_cxx: + env, linker_ne = _split_env(linker) + aix, linker_na = _split_aix(linker_ne) + _, compiler_cxx_ne = _split_env(self.compiler_cxx) + _, linker_exe_ne = _split_env(self.linker_exe) + + params = _linker_params(linker_na, linker_exe_ne) + linker = env + aix + compiler_cxx_ne + params + + linker = compiler_fixup(linker, ld_args) + + self.spawn(linker + ld_args) + except DistutilsExecError as msg: + raise LinkError(msg) + else: + log.debug("skipping %s (up-to-date)", output_filename) + + # -- 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 _is_gcc(self): + cc_var = sysconfig.get_config_var("CC") + compiler = os.path.basename(shlex.split(cc_var)[0]) + return "gcc" in compiler or "g++" in compiler + + def runtime_library_dir_option(self, dir: str) -> str | list[str]: # type: ignore[override] # Fixed in pypa/distutils#339 + # XXX Hackish, at the very least. See Python bug #445902: + # https://bugs.python.org/issue445902 + # Linkers on different platforms need different options to + # specify that directories need to be added to the list of + # directories searched for dependencies when a dynamic library + # is sought. GCC on GNU systems (Linux, FreeBSD, ...) has to + # be told to pass the -R option through to the linker, whereas + # other compilers and gcc on other systems just know this. + # Other compilers may need something slightly different. At + # this time, there's no way to determine this information from + # the configuration data stored in the Python installation, so + # we use this hack. + if sys.platform[:6] == "darwin": + from distutils.util import get_macosx_target_ver, split_version + + macosx_target_ver = get_macosx_target_ver() + if macosx_target_ver and split_version(macosx_target_ver) >= [10, 5]: + return "-Wl,-rpath," + dir + else: # no support for -rpath on earlier macOS versions + return "-L" + dir + elif sys.platform[:7] == "freebsd": + return "-Wl,-rpath=" + dir + elif sys.platform[:5] == "hp-ux": + return [ + "-Wl,+s" if self._is_gcc() else "+s", + "-L" + dir, + ] + + # For all compilers, `-Wl` is the presumed way to pass a + # compiler option to the linker + if sysconfig.get_config_var("GNULD") == "yes": + return consolidate_linker_args([ + # Force RUNPATH instead of RPATH + "-Wl,--enable-new-dtags", + "-Wl,-rpath," + dir, + ]) + else: + return "-Wl,-R" + dir + + def library_option(self, lib): + return "-l" + lib + + @staticmethod + def _library_root(dir): + """ + macOS users can specify an alternate SDK using'-isysroot'. + Calculate the SDK root if it is specified. + + Note that, as of Xcode 7, Apple SDKs may contain textual stub + libraries with .tbd extensions rather than the normal .dylib + shared libraries installed in /. The Apple compiler tool + chain handles this transparently but it can cause problems + for programs that are being built with an SDK and searching + for specific libraries. Callers of find_library_file need to + keep in mind that the base filename of the returned SDK library + file might have a different extension from that of the library + file installed on the running system, for example: + /Applications/Xcode.app/Contents/Developer/Platforms/ + MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/ + usr/lib/libedit.tbd + vs + /usr/lib/libedit.dylib + """ + cflags = sysconfig.get_config_var('CFLAGS') + match = re.search(r'-isysroot\s*(\S+)', cflags) + + apply_root = ( + sys.platform == 'darwin' + and match + and ( + dir.startswith('/System/') + or (dir.startswith('/usr/') and not dir.startswith('/usr/local/')) + ) + ) + + return os.path.join(match.group(1), dir[1:]) if apply_root else dir + + def find_library_file(self, dirs, lib, debug=False): + """ + Second-guess the linker with not much hard + data to go on: GCC seems to prefer the shared library, so + assume that *all* Unix C compilers do, + ignoring even GCC's "-static" option. + """ + lib_names = ( + self.library_filename(lib, lib_type=type) + for type in 'dylib xcode_stub shared static'.split() + ) + + roots = map(self._library_root, dirs) + + searched = itertools.starmap(os.path.join, itertools.product(roots, lib_names)) + + found = filter(os.path.exists, searched) + + # Return None if it could not be found in any dir. + return next(found, None) |