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  • Re: Need for manual link to libatomic on powerpc?

    From John Paul Adrian Glaubitz@21:1/5 to Jeffrey Walton on Tue Aug 23 16:00:01 2022
    Hello!

    On 8/23/22 15:34, Jeffrey Walton wrote:
    If not, does anyone know why libatomic might not be added by the
    compiler driver when needed on Debian powerpc?

    Yes, it's a long-standing GCC bug [1].

    Adrian

    [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81358

    --
    .''`. John Paul Adrian Glaubitz
    : :' : Debian Developer
    `. `' Physicist
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  • From Mathieu Malaterre@21:1/5 to [email protected] on Tue Aug 23 15:50:01 2022
    On Tue, Aug 23, 2022 at 3:34 PM Jeffrey Walton <[email protected]> wrote:

    Hi Everyone,

    I'm trying to track down a Crypto++ 8/GCC 12 bug at [1,2]. Our Debian maintainer, who is helping with testing, mentioned we were missing
    libatomic during link when using santiziers on powerpc and hppa.[3,4]
    That kind of caught me off-guard.

    On Fedora (but not Debian in the past), we needed to install gcc, g++, libasan, libubsan and friends. Libraries for Asan and Ubsan are
    separate installs on Fedora (but not Debian). However, once installed,
    the compiler driver added the necessary libs (like libubsan and
    libatomic) when it encountered an option like -fsanitize=undefined.

    My question is, are libasan, libubsan and friends a separate install
    for Debian on powerpc and hppa?

    If not, does anyone know why libatomic might not be added by the
    compiler driver when needed on Debian powerpc?

    Last time I asked, I was reminded the status:

    * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104248#c4

    Long story short, gcc will not automatically add -latomic for you ..
    end of story :(

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  • From Jeffrey Walton@21:1/5 to All on Tue Aug 23 15:40:01 2022
    Hi Everyone,

    I'm trying to track down a Crypto++ 8/GCC 12 bug at [1,2]. Our Debian maintainer, who is helping with testing, mentioned we were missing
    libatomic during link when using santiziers on powerpc and hppa.[3,4]
    That kind of caught me off-guard.

    On Fedora (but not Debian in the past), we needed to install gcc, g++,
    libasan, libubsan and friends. Libraries for Asan and Ubsan are
    separate installs on Fedora (but not Debian). However, once installed,
    the compiler driver added the necessary libs (like libubsan and
    libatomic) when it encountered an option like -fsanitize=undefined.

    My question is, are libasan, libubsan and friends a separate install
    for Debian on powerpc and hppa?

    If not, does anyone know why libatomic might not be added by the
    compiler driver when needed on Debian powerpc?

    Thanks in advance.

    [1] https://github.com/weidai11/cryptopp/issues/1134
    [2] https://github.com/weidai11/cryptopp/issues/1141
    [3] https://github.com/weidai11/cryptopp/issues/1141#issuecomment-1224051475 [4] https://buildd.debian.org/status/package.php?p=libcrypto%2B%2B&suite=sid

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  • From Paul Wise@21:1/5 to Mathieu Malaterre on Wed Aug 24 02:20:01 2022
    On Tue, 2022-08-23 at 15:46 +0200, Mathieu Malaterre wrote:

    gcc will not automatically add -latomic for you

    This has been an issue on RISC-V too.

    end of story :(

    IIRC there are patches fixing this but they didn't manage to get
    upstreamed yet. I expect they could get in if there were someone
    willing to put in the effort of upstreaming.

    --
    bye,
    pabs

    https://wiki.debian.org/PaulWise

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