On Thursday, 07 February 2019 at 17:34, Florian Weimer wrote:
> * Tom Callaway:
>
> > So, R links with rt if this configure check succeeds:
> >
> > AC_CHECK_LIB(rt, clock_gettime)
> >
> > Sure enough, on aarch64 and ppc64le, there is no clock_gettime in
> > librt.so.1. I'm not sure _why_, but there is probably a good reason.
>
> Hah!
>
> We moved clock_gettime to libc.so.6 in glibc 2.17, so that it is
> available without -lrt as well. But we forgot to turn the legacy
> definitions into compatibility symbols, so they are still being picked
> up with -lrt. This should be easy enough to fix.
clock_getres(2) confirms:
Link with -lrt (only for glibc versions before 2.17).
Regards,
Dominik
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