view docs/spec/segmented-track.tikz @ 563:c6036e0a511a

Work around the non-universality of fdatasync()

POSIX, which specifies fdatasync(), also apparently specifies that
POSIX_SYNCHRONIZED_IO is defined to a non-zero value if fdatasync() is
available -- or at least that's what the man page suggests on Linux.
This is probably good enough for us, anyway.

\foreach \x in {-2,-1.4,-0.5,0,0.8,1.3,1.8} {
  \draw (\x,-0.2) -- (\x,0.2); 
}          
\input track.tikz