[v2] mklog: Add lookup for new generated files in libstdc++

On 30/01/24 15:02 +0000, Jonathan Wakely wrote:
>That way other subdirectories could add their own extra generated files to it.

Like so.

     mklog: Add lookup for generated files in specific sub-directories
     
     The mklog.py output for libstdc++-v3/include/bits/version.h is awful.
     Teaching mklog.py that it's generated makes it correctly use
     "Regenerate" for its changes. We can do the same for the other new
     generated headers as well.
     
     This change adds a new dict with directories as keys, and a set of
     filenames as the values. The location of the ChangeLog file can be
     looked up in the dict and then the relative_path looked up in the set.
     
     contrib/ChangeLog:
     
             * mklog.py (subdir_generated_files): New dict of per-directory
             generated files.
             (generate_changelog): Use subdir_generated_files.

On Tue, 30 Jan 2024 at 21:35, Jonathan Wakely wrote:
>
> On 30/01/24 15:02 +0000, Jonathan Wakely wrote:
> >That way other subdirectories could add their own extra generated files to it.
>
> Like so.
>
>      mklog: Add lookup for generated files in specific sub-directories
>
>      The mklog.py output for libstdc++-v3/include/bits/version.h is awful.

For example, here's what the mklog output shows for
r14-7220-gac1a399bf61b04 (which only actually changed one macro, and
just altered the line numbers for the ones following it):

       * include/bits/version.h (defined):
       (if):
       (__glibcxx_bind_back):
       (__cpp_lib_bind_back):
       (__glibcxx_want_bind_back):
       (__glibcxx_want_starts_ends_with):
       (__glibcxx_want_bit_cast):
       (__glibcxx_want_bitops):
       (__glibcxx_want_bounded_array_traits):
       (__glibcxx_want_concepts):
       (__glibcxx_want_optional):
       (__glibcxx_want_destroying_delete):
       (__glibcxx_want_constexpr_string_view):
       (__glibcxx_want_endian):
       (__glibcxx_want_int_pow2):
       (__glibcxx_want_integer_comparison_functions):
       (__glibcxx_want_is_constant_evaluated):
       (__glibcxx_want_constexpr_char_traits):
       (__glibcxx_want_is_layout_compatible):
       (__glibcxx_want_is_nothrow_convertible):
       (__glibcxx_want_is_pointer_interconvertible):
       (__glibcxx_want_math_constants):
       (__glibcxx_want_make_obj_using_allocator):
       (__glibcxx_want_remove_cvref):
       (__glibcxx_want_source_location):
       (__glibcxx_want_span):
       (__glibcxx_want_ssize):
       (__glibcxx_want_three_way_comparison):
       (__glibcxx_want_to_address):
       (__glibcxx_want_to_array):
       (__glibcxx_want_type_identity):
       (__glibcxx_want_unwrap_ref):
       (__glibcxx_want_constexpr_iterator):
       (__glibcxx_want_interpolate):
       (__glibcxx_want_constexpr_utility):
       (__glibcxx_want_shift):
       (__glibcxx_want_ranges):
       (__glibcxx_want_constexpr_numeric):
       (__glibcxx_want_constexpr_functional):
       (__glibcxx_want_constexpr_algorithms):
       (__glibcxx_want_constexpr_tuple):
       (__glibcxx_want_constexpr_memory):
       (__glibcxx_want_atomic_shared_ptr):
       (__glibcxx_want_atomic_wait):
       (__glibcxx_want_barrier):
       (__glibcxx_want_format):
       (__glibcxx_want_format_uchar):
       (__glibcxx_want_constexpr_complex):
       (__glibcxx_want_constexpr_dynamic_alloc):
       (__glibcxx_want_constexpr_string):
       (__glibcxx_want_constexpr_vector):
       (__glibcxx_want_erase_if):
       (__glibcxx_want_generic_unordered_lookup):
       (__glibcxx_want_jthread):
       (__glibcxx_want_latch):
       (__glibcxx_want_list_remove_return_type):
       (__glibcxx_want_polymorphic_allocator):
       (__glibcxx_want_move_iterator_concept):
       (__glibcxx_want_semaphore):
       (__glibcxx_want_smart_ptr_for_overwrite):
       (__glibcxx_want_syncbuf):
       (__glibcxx_want_byteswap):
       (__glibcxx_want_constexpr_charconv):
       (__glibcxx_want_constexpr_typeinfo):
       (__glibcxx_want_expected):
       (__glibcxx_want_freestanding_algorithm):
       (__glibcxx_want_freestanding_array):
       (__glibcxx_want_freestanding_cstring):
       (__glibcxx_want_freestanding_expected):
       (__glibcxx_want_freestanding_optional):
       (__glibcxx_want_freestanding_string_view):
       (__glibcxx_want_freestanding_variant):
       (__glibcxx_want_invoke_r):
       (__glibcxx_want_is_scoped_enum):
       (__glibcxx_want_reference_from_temporary):
       (__glibcxx_want_ranges_to_container):
       (__glibcxx_want_ranges_zip):
       (__glibcxx_want_ranges_chunk):
       (__glibcxx_want_ranges_slide):
       (__glibcxx_want_ranges_chunk_by):
       (__glibcxx_want_ranges_join_with):
       (__glibcxx_want_ranges_repeat):
       (__glibcxx_want_ranges_stride):
       (__glibcxx_want_ranges_cartesian_product):
       (__glibcxx_want_ranges_as_rvalue):
       (__glibcxx_want_ranges_as_const):
       (__glibcxx_want_ranges_enumerate):
       (__glibcxx_want_ranges_fold):
       (__glibcxx_want_ranges_contains):
       (__glibcxx_want_ranges_iota):
       (__glibcxx_want_ranges_find_last):
       (__glibcxx_want_constexpr_bitset):
       (__glibcxx_want_stdatomic_h):
       (__glibcxx_want_adaptor_iterator_pair_constructor):
       (__glibcxx_want_formatters):
       (__glibcxx_want_forward_like):
       (__glibcxx_want_ios_noreplace):
       (__glibcxx_want_move_only_function):
       (__glibcxx_want_out_ptr):
       (__glibcxx_want_print):
       (__glibcxx_want_spanstream):
       (__glibcxx_want_stacktrace):
       (__glibcxx_want_string_contains):
       (__glibcxx_want_string_resize_and_overwrite):
       (__glibcxx_want_to_underlying):
       (__glibcxx_want_unreachable):
       (__glibcxx_want_fstream_native_handle):
       (__glibcxx_want_ratio):
       (__glibcxx_want_saturation_arithmetic):
       (__glibcxx_want_to_string):

Notice it has nonsense like "if" and "defined" in the function names
it tries to guess.