| """Provide access to Python's configuration information. The specific names |
| defined in the module depend heavily on the platform and configuration. |
| |
| Written by: Fred L. Drake, Jr. |
| Email: <fdrake@acm.org> |
| Initial date: 17-Dec-1998 |
| """ |
| |
| __version__ = "$Revision$" |
| |
| import os |
| import re |
| import string |
| import sys |
| |
| from errors import DistutilsPlatformError |
| |
| |
| PREFIX = os.path.normpath(sys.prefix) |
| EXEC_PREFIX = os.path.normpath(sys.exec_prefix) |
| |
| |
| def get_python_inc(plat_specific=0, prefix=None): |
| """Return the directory containing installed Python header files. |
| |
| If 'plat_specific' is false (the default), this is the path to the |
| non-platform-specific header files, i.e. Python.h and so on; |
| otherwise, this is the path to platform-specific header files |
| (namely config.h). |
| |
| If 'prefix' is supplied, use it instead of sys.prefix or |
| sys.exec_prefix -- i.e., ignore 'plat_specific'. |
| """ |
| if prefix is None: |
| prefix = (plat_specific and EXEC_PREFIX or PREFIX) |
| if os.name == "posix": |
| return os.path.join(prefix, "include", "python" + sys.version[:3]) |
| elif os.name == "nt": |
| return os.path.join(prefix, "Include") # include or Include? |
| elif os.name == "mac": |
| return os.path.join(prefix, "Include") |
| else: |
| raise DistutilsPlatformError, \ |
| ("I don't know where Python installs its C header files " + |
| "on platform '%s'") % os.name |
| |
| |
| def get_python_lib(plat_specific=0, standard_lib=0, prefix=None): |
| """Return the directory containing the Python library (standard or |
| site additions). |
| |
| If 'plat_specific' is true, return the directory containing |
| platform-specific modules, i.e. any module from a non-pure-Python |
| module distribution; otherwise, return the platform-shared library |
| directory. If 'standard_lib' is true, return the directory |
| containing standard Python library modules; otherwise, return the |
| directory for site-specific modules. |
| |
| If 'prefix' is supplied, use it instead of sys.prefix or |
| sys.exec_prefix -- i.e., ignore 'plat_specific'. |
| """ |
| if prefix is None: |
| prefix = (plat_specific and EXEC_PREFIX or PREFIX) |
| |
| if os.name == "posix": |
| libpython = os.path.join(prefix, |
| "lib", "python" + sys.version[:3]) |
| if standard_lib: |
| return libpython |
| else: |
| return os.path.join(libpython, "site-packages") |
| |
| elif os.name == "nt": |
| if standard_lib: |
| return os.path.join(PREFIX, "Lib") |
| else: |
| return prefix |
| |
| elif os.name == "mac": |
| if platform_specific: |
| if standard_lib: |
| return os.path.join(EXEC_PREFIX, "Mac", "Plugins") |
| else: |
| raise DistutilsPlatformError, \ |
| "OK, where DO site-specific extensions go on the Mac?" |
| else: |
| if standard_lib: |
| return os.path.join(PREFIX, "Lib") |
| else: |
| raise DistutilsPlatformError, \ |
| "OK, where DO site-specific modules go on the Mac?" |
| else: |
| raise DistutilsPlatformError, \ |
| ("I don't know where Python installs its library " + |
| "on platform '%s'") % os.name |
| |
| # get_python_lib() |
| |
| |
| def get_config_h_filename(): |
| """Return full pathname of installed config.h file.""" |
| inc_dir = get_python_inc(plat_specific=1) |
| return os.path.join(inc_dir, "config.h") |
| |
| |
| def get_makefile_filename(): |
| """Return full pathname of installed Makefile from the Python build.""" |
| lib_dir = get_python_lib(plat_specific=1, standard_lib=1) |
| return os.path.join(lib_dir, "config", "Makefile") |
| |
| |
| def parse_config_h(fp, g=None): |
| """Parse a config.h-style file. |
| |
| A dictionary containing name/value pairs is returned. If an |
| optional dictionary is passed in as the second argument, it is |
| used instead of a new dictionary. |
| """ |
| if g is None: |
| g = {} |
| define_rx = re.compile("#define ([A-Z][A-Z0-9_]+) (.*)\n") |
| undef_rx = re.compile("/[*] #undef ([A-Z][A-Z0-9_]+) [*]/\n") |
| # |
| while 1: |
| line = fp.readline() |
| if not line: |
| break |
| m = define_rx.match(line) |
| if m: |
| n, v = m.group(1, 2) |
| try: v = string.atoi(v) |
| except ValueError: pass |
| g[n] = v |
| else: |
| m = undef_rx.match(line) |
| if m: |
| g[m.group(1)] = 0 |
| return g |
| |
| def parse_makefile(fp, g=None): |
| """Parse a Makefile-style file. |
| |
| A dictionary containing name/value pairs is returned. If an |
| optional dictionary is passed in as the second argument, it is |
| used instead of a new dictionary. |
| |
| """ |
| if g is None: |
| g = {} |
| variable_rx = re.compile("([a-zA-Z][a-zA-Z0-9_]+)\s*=\s*(.*)\n") |
| done = {} |
| notdone = {} |
| # |
| while 1: |
| line = fp.readline() |
| if not line: |
| break |
| m = variable_rx.match(line) |
| if m: |
| n, v = m.group(1, 2) |
| v = string.strip(v) |
| if "$" in v: |
| notdone[n] = v |
| else: |
| try: v = string.atoi(v) |
| except ValueError: pass |
| done[n] = v |
| |
| # do variable interpolation here |
| findvar1_rx = re.compile(r"\$\(([A-Za-z][A-Za-z0-9_]*)\)") |
| findvar2_rx = re.compile(r"\${([A-Za-z][A-Za-z0-9_]*)}") |
| while notdone: |
| for name in notdone.keys(): |
| value = notdone[name] |
| m = findvar1_rx.search(value) |
| if not m: |
| m = findvar2_rx.search(value) |
| if m: |
| n = m.group(1) |
| if done.has_key(n): |
| after = value[m.end():] |
| value = value[:m.start()] + done[n] + after |
| if "$" in after: |
| notdone[name] = value |
| else: |
| try: value = string.atoi(value) |
| except ValueError: pass |
| done[name] = string.strip(value) |
| del notdone[name] |
| elif notdone.has_key(n): |
| # get it on a subsequent round |
| pass |
| else: |
| done[n] = "" |
| after = value[m.end():] |
| value = value[:m.start()] + after |
| if "$" in after: |
| notdone[name] = value |
| else: |
| try: value = string.atoi(value) |
| except ValueError: pass |
| done[name] = string.strip(value) |
| del notdone[name] |
| else: |
| # bogus variable reference; just drop it since we can't deal |
| del notdone[name] |
| |
| # "Fix" all pathnames in the Makefile that are explicitly relative, |
| # ie. that start with "./". This is a kludge to fix the "./ld_so_aix" |
| # problem, the nature of which is that Python's installed Makefile |
| # refers to "./ld_so_aix", but when we are building extensions we are |
| # far from the directory where Python's Makefile (and ld_so_aix, for |
| # that matter) is installed. Unfortunately, there are several other |
| # relative pathnames in the Makefile, and this fix doesn't fix them, |
| # because the layout of Python's source tree -- which is what the |
| # Makefile refers to -- is not fully preserved in the Python |
| # installation. Grumble. |
| from os.path import normpath, join, dirname |
| for (name, value) in done.items(): |
| if value[0:2] == "./": |
| done[name] = normpath(join(dirname(fp.name), value)) |
| |
| # save the results in the global dictionary |
| g.update(done) |
| return g |
| |
| |
| def _init_posix(): |
| """Initialize the module as appropriate for POSIX systems.""" |
| g = globals() |
| # load the installed Makefile: |
| parse_makefile(open(get_makefile_filename()), g) |
| |
| |
| def _init_nt(): |
| """Initialize the module as appropriate for NT""" |
| g = globals() |
| # set basic install directories |
| g['LIBDEST'] = get_python_lib(plat_specific=0, standard_lib=1) |
| g['BINLIBDEST'] = get_python_lib(plat_specific=1, standard_lib=1) |
| |
| # XXX hmmm.. a normal install puts include files here |
| g['INCLUDEPY'] = get_python_inc(plat_specific=0) |
| |
| g['SO'] = '.pyd' |
| g['exec_prefix'] = EXEC_PREFIX |
| |
| |
| def _init_mac(): |
| """Initialize the module as appropriate for Macintosh systems""" |
| g = globals() |
| # set basic install directories |
| g['LIBDEST'] = get_python_lib(plat_specific=0, standard_lib=1) |
| g['BINLIBDEST'] = get_python_lib(plat_specific=1, standard_lib=1) |
| |
| # XXX hmmm.. a normal install puts include files here |
| g['INCLUDEPY'] = get_python_inc(plat_specific=0) |
| |
| g['SO'] = '.ppc.slb' |
| g['exec_prefix'] = EXEC_PREFIX |
| print sys.prefix, PREFIX |
| |
| # XXX are these used anywhere? |
| g['install_lib'] = os.path.join(EXEC_PREFIX, "Lib") |
| g['install_platlib'] = os.path.join(EXEC_PREFIX, "Mac", "Lib") |
| |
| |
| try: |
| exec "_init_" + os.name |
| except NameError: |
| # not needed for this platform |
| pass |
| else: |
| exec "_init_%s()" % os.name |
| |
| |
| del _init_posix |
| del _init_nt |
| del _init_mac |