[arch-announce] C++ ABI change

Arch Linux: Recent news updates: Evangelos Foutras announce at archlinux.org
Thu Dec 10 07:01:23 UTC 2015

GCC 5.x contains libstdc++ with [dual ABI][1] support and we have now switched
to the new ABI.

While the old C++ ABI is still available, it is recommended that you build all
non-repo packages to have the new ABI. This is particularly important if they
link to another library built against the new ABI. You can get a list of
packages to rebuild using the following shell script:


    while read pkg; do

        mapfile -t files < <(pacman -Qlq $pkg | grep -v /$)

        grep -Fq libstdc++.so.6 "${files[@]}" 2>/dev/null && echo $pkg

    done < <(pacman -Qmq)

(Original announcement text by Allan McRae [[link][2]])

   [1]: https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html

   [2]: https://lists.archlinux.org/pipermail/arch-dev-

URL: https://www.archlinux.org/news/c-abi-change/

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