Commits on Nov 5, 2024

1. Relaxed ABI tagging …

   This commit incorporates some of the suggestions from pybind11 PR
   pybind/pybind11#4953 (and linked discussion) to
   relax ABI tagging for libstdc++ and MSVC. The goal is to ensure that
   ABI-incompatible extensions are separated from each other. These checks
   were previously too fine-grained and caused isolation in cases where an
   actual ABI incompatibility was not present. This is a long-standing
   problem in both pybind11 and nanobind causing inconvenience for users.
   
   While looking into this topic, I realized that libc++ has an opt-in
   unstable ABI feature
   (https://libcxx.llvm.org/DesignDocs/ABIVersioning.html). The PR also
   adds checks for this.
   
   Merging this PR will imply an ABI version bump for nanobind due to the
   differnt naming convention of the associated ABI tag.

   

   wjakob committed Nov 5, 2024
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