[Bug 44327] Wine-staging doesn' t compile with Glibc 2.11. The problem in server-Realtime_Priority patch

https://bugs.winehq.org/show_bug.cgi?id=44327

--- Comment #2 from Zhenya  ---
I'd prepared a VirtualBox image to help you reproduce my bug. Download link:
https://yadi.sk/d/AxWNQd1W3Pmtso Size: 2,6 Gb, unpacked size: 16 Gb. My
file-roller archiver can't unpack it, so I'm using "xz -d SLE_11_SP4.vdi.xz"
for that.

First of all, look on a screenshots: https://imgur.com/a/nYOBo

When I search "SCHED_IDLE" in my /usr/include, I'd found two files made in 2015
and 2017. Second file is a part of Glibc 2.17. So if downgrade Glibc to the
default 2.11 version, the defined SCHED_IDLE will disappear.

Steps to reproduce this bug:

1). Open YAST2 (root password is "sourceengine2").
2). Open "Repositories" tab and select "Glibc"
3). Delete glibc-extra
4). Switch all installed packages to their default versions
5). Delete libgnutls-devel (bug 43971).
6). Reboot the VM
6). Type:

cd /usr/src/packages/SPECS
rpmbuild -ba --nodeps wine-staging.spec