[llvm-branch-commits] [libcxx] Prepare libcxx and libcxxabi for pointer field protection. (PR #151651)

[Peter Collingbourne via llvm-branch-commits]

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@@ -214,7 +214,11 @@ set(LIBCXX_LIBRARY_VERSION "${LIBCXX_ABI_VERSION}.0" CACHE STRING
    For example, -DLIBCXX_LIBRARY_VERSION=x.y will result in the library being named
    libc++.x.y.dylib, along with the usual symlinks pointing to that. On Apple platforms,
    this also controls the linker's 'current_version' property.")
-set(LIBCXX_ABI_NAMESPACE "__${LIBCXX_ABI_VERSION}" CACHE STRING "The inline ABI namespace used by libc++. It defaults to __n where `n` is the current ABI version.")
+set(default_abi_namespace "__${LIBCXX_ABI_VERSION}")
+if(NOT LIBCXX_PFP STREQUAL "none")
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pcc wrote:

That's fine with me. Since no platform with this requirement currently exists, I'll revert this part and it will be up to the user to create their own cache file if necessary.

https://github.com/llvm/llvm-project/pull/151651