[Bug 217291] New: librt empty, man pages should not tell users to link with -lrt

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=217291

            Bug ID: 217291
           Summary: librt empty, man pages should not tell users to link
                    with -lrt
           Product: Documentation
           Version: unspecified
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: low
          Priority: P1
         Component: man-pages
          Assignee: documentation_man-pages@kernel-bugs.osdl.org
          Reporter: blomqvist.janne@gmail.com
        Regression: No

Nowadays librt.a is empty and librt.so is an empty placeholder, and everything
has moved to libc proper. Similar to what was done with clock_gettime() and
friends for glibc 2.17. Man pages should have similar language as for
clock_gettime that one no longer needs to link with -lrt except for old glibc
versions.

Looking at the output of git grep -F -e '-lrt' in the man-pages repo it seems
the following man pages need fixing:

man2/timer_create.2          - Moved to libc in glibc 2.34
man2/timer_delete.2          - Same
man2/timer_getoverrun.2      - Same
man2/timer_settime.2         - Same
man3/aio_cancel.3            - Same
man3/aio_error.3             - Same
man3/aio_fsync.3             - Same
man3/aio_init.3              - Same
man3/aio_read.3              - Same
man3/aio_return.3            - Same
man3/aio_suspend.3           - Same
man3/aio_write.3             - Same
man3/intro.3                 - No need to mention obsolete librt?
man3/lio_listio.3            - Moved to libc in glibc 2.34
man3/mq_close.3              - Same
man3/mq_getattr.3            - Same
man3/mq_notify.3             - Same
man3/mq_open.3               - Same
man3/mq_receive.3            - Same
man3/mq_send.3               - Same
man3/mq_unlink.3             - Same
man3/pthread_getcpuclockid.3 - Remove -lrt from example comment
man3/shm_open.3              - Moved to libc in glibc 2.34
man7/mq_overview.7           - Update to reflect that -lrt needed only for
glibc < 2.34
man7/shm_overview.7          - Same

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