On Sun, Dec 2, 2012 at 4:46 PM, Tobias Burnus <bur...@net-b.de> wrote: > Janne Blomqvist wrote: >> >> Needing to link with librt in order to access clock_gettime is an >> unfortunate wart in glibc, but other C libraries exist out there >> (heck, given the success of Android, glibc is certainly a minority >> even if you limit yourself to Linux), and of those that provide >> clock_gettime, most have it directly in libc and not in a separate >> library. > > > I think that has changed in GLIBC 2.17: > http://sourceware.org/git/?p=glibc.git;a=blob_plain;f=NEWS;hb=HEAD
Ah, nice! That means we can look forward to 1 ns resolution on Linux systems regardless of whether librt is linked or not; the code is there already in order to support other systems where clock_* is already in libc, so all that is required is a recompile against a newer glibc. As an aside, the reason why we don't unconditionally link in librt is exactly that explained in the link. -- Janne Blomqvist
