[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
NOKEYCHECK=True
GitOrigin-RevId: f4c1258d5633fcf06385ff3fd1f4bf57ab971964
diff --git a/include/module.modulemap b/include/module.modulemap
index d8049cb..80cdfe3 100644
--- a/include/module.modulemap
+++ b/include/module.modulemap
@@ -869,6 +869,7 @@
module __function_like { private header "__function_like.h" export * }
module __hash_table { header "__hash_table" export * }
module __locale { private header "__locale" export * }
+ module __mbstate { private header "__mbstate_t.h" export * }
module __mutex_base { private header "__mutex_base" export * }
module __node_handle { private header "__node_handle" export * }
module __nullptr { header "__nullptr" export * }