Also added creation of 'implib_dir', a temporary directory specific to
MSVC++ -- but I checked in two ways of fixing it (Lyle's and mine),
because I'm not sure which is right.
- DistutilsOptionError is now documented as it's actually used, ie.
to indicate bogus option values (usually user options, eg. from
the command-line)
- added DistutilsSetupError to indicate errors that definitely arise
in the setup script
- got rid of DistutilsValueError, and changed all usage of it to
either DistutilsSetupError or ValueError as appropriate
- simplified a bunch of option get/set methods in Command and
Distribution classes -- just pass on AttributeError most of
the time, rather than turning it into something else
* build to "Debug" or "Release" temp directory
* put linker turds (.lib and .exp files) in the build temp directory
* tack on "_d" to extensions built with debugging
* added 'get_ext_libname()' help in putting linker turds to temp dir
Also, moved the code that simplifies None to empty list for a bunch
of options to 'finalize_options()' instead of 'run()'.
Changed signature of 'build_extensions()': no longer takes the extension
list, but uses 'self.extensions' (just like 'get_outputs()' has to)
Moved call to 'check_extensions_list()' from 'run()' to 'build_extensions()',
again for consistency with 'get_outputs()'.
* replaced build_lib.py with build_clib.py
* renamed the class in build_clib.py
* changed all references to 'build_lib' command in other command classes
when building extensions (uses build_lib's 'get_library_names()' method).
Ensure that the relative structure of source filenames is preserved in
the temporary build tree, eg. foo/bar.c compiles to
build/temp.<plat>/foo/bar.o.
* 'build_dir' -> 'build_lib', which by default takes its value
straight from 'build_lib' in the 'build' command
* added 'build_temp' and 'inplace' options
* change 'build_extensions()' to put object files (compiler turds) in
'build_temp' dir
* complicated the name-of-extension-file shenanigans in
'build_extensions()' to support "in-place" extension building, i.e.
put the extension right into the source tree (handy for developers)
* added 'get_ext_fullname()', renamed 'extension_filename()' to
'get_ext_filename()', and tweaked the latter a bit -- all to support
the new filename shenanigans
