Commit Graph

6 Commits

Author SHA1 Message Date
Louis Dionne f4c1258d56 [libc++] Add an option to disable wide character support in libc++
Some embedded platforms do not wish to support the C library functionality
for handling wchar_t because they have no use for it. It makes sense for
libc++ to work properly on those platforms, so this commit adds a carve-out
of functionality for wchar_t.

Unfortunately, unlike some other carve-outs (e.g. random device), this
patch touches several parts of the library. However, despite the wide
impact of this patch, I still think it is important to support this
configuration since it makes it much simpler to port libc++ to some
embedded platforms.

Differential Revision: https://reviews.llvm.org/D111265
2021-10-12 06:08:23 -04:00
Louis Dionne 64184b4af0 [libc++][NFC] Remove useless _LIBCPP_PUSH_MACROS
Only files that actually use min/max are required to do this dance.

Differential Revision: https://reviews.llvm.org/D108778
2021-08-27 12:41:55 -04:00
Mark de Wever 1123100a16 [libcxx] Remove _LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED
All supported compilers should support
_LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED so this can be removed.

Reviewed By: ldionne, #libc, Quuxplusone

Differential Revision: https://reviews.llvm.org/D107239
2021-08-10 18:59:55 +02:00
Mark de Wever b49961987f [lbc++][nfc] Use _LIBCPP_HIDE_FROM_ABI.
This replaces _LIBCPP_INLINE_VISIBILITY with _LIBCPP_HIDE_FROM_ABI. It's
not intended to do for other parts of libc++. This change makes it easy
to search and replace all occurrences of the patches in review.
2021-07-21 08:02:15 +02:00
Mark de Wever 963495f0d4 [libc++][format] Adds availability macros for std::format.
This prevents std::format to be available until there's an ABI stable
version. (This only impacts the Apple platform.)

Depends on D102703

Reviewed By: ldionne, #libc

Differential Revision: https://reviews.llvm.org/D102705
2021-05-26 17:54:33 +02:00
Mark de Wever de9df3f5b9 [libc++][NFC] Move basic_format_parse_context to its own header.
This is a preparation to split the format header in smaller parts for the
upcoming patches.

Depends on D101723

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D102703
2021-05-26 17:50:09 +02:00