[Bug libc/17508] [hppa] __SIGRTMIN too high to support building systemd.

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https://sourceware.org/bugzilla/show_bug.cgi?id=17508

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=13d845549e41823e6658122dcf268154bcbbcfde

commit 13d845549e41823e6658122dcf268154bcbbcfde
Author: Carlos O'Donell <carlos@redhat.com>
Date:   Thu Oct 23 23:14:12 2014 -0400

    hppa: Make __SIGRTMIN 32 (ABI break).

    In the Linux kernel version 3.17 the signal numbers were rearranged in
    order to make hppa like every other arch. Previously we started
    __SIGRTMIN at 37, and that meant several pieces of important software,
    including systemd, would fail to build. To support systemd we removed
    SIGEMT and SIGLOST, and rearranged the others according to expected
    values. This is technically an ABI incompatible change, but because
    zero applications use SIGSTKFLT, SIGXCPU, SIGXFSZ and SIGSYS nothing
    broke.  Nothing uses SIGEMT and SIGLOST, and they were present for
    HPUX compatibility which is no longer supported. Thus because nothing
    breaks we don't do any compatibility work here.

    Upstream kernel commit is 1f25df2eff5b25f52c139d3ff31bc883eee9a0ab.

    Signed-off-by: Carlos O'Donell <carlos@systemhalted.org>
    Signed-off-by: Helge Deller <deller@gmx.de>

    2014-10-23  Carlos O'Donell  <carlos@systemhalted.org>
            Helge Deller <deller@gmx.de>

        [BZ #17508]
        * sysdeps/unix/sysv/linux/hppa/bits/signum.h: Remove SIGEMT.
        Define SIGSTKFLT as 7. Define SIGSYS as 31. Define SIGXCPU as 12.
        Remove SIGLOST. Define SIGXFSZ as 30. Define __SIGRTMIN as 32.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                                  |    8 ++++++++
 NEWS                                       |    2 +-
 sysdeps/unix/sysv/linux/hppa/bits/signum.h |   22 +++++++++++++++-------
 3 files changed, 24 insertions(+), 8 deletions(-)

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