[libcxx] Stop using use c++ subdirectory for libc++ library

The new layout more closely matches the layout used by other compilers.
This is only used when LLVM_ENABLE_PER_TARGET_RUNTIME_DIR is enabled.

Differential Revision: https://reviews.llvm.org/D100869

GitOrigin-RevId: f749550cfe9f0bf2364abb2139835348587062ed
1 file changed
tree: 25808e82fa5a5b434a5d8065d14132bb7de95d43
  1. cmake/
  2. docs/
  3. include/
  4. src/
  5. test/
  6. .clang-format
  7. CMakeLists.txt
  8. LICENSE.TXT