[Libguestfs] [PATCH 2/3] builder: Check HAVE_POSIX_FADVISE before using it

--- builder/pxzcat-c.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/builder/pxzcat-c.c b/builder/pxzcat-c.c index 0bbd296..dec9cc2 100644 --- a/builder/pxzcat-c.c +++ b/builder/pxzcat-c.c @@ -214,8 +214,10 @@ pxzcat (value filenamev, value outputfilev, unsigned nr_threads) unix_error (err, (char *) "ftruncate", outputfilev); } +#if defined HAVE_POSIX_FADVISE /* Tell the kernel we won't read the output file. */ ignore_value (posix_fadvise (fd, 0, 0, POSIX_FADV_RANDOM|POSIX_FADV_DONTNEED)); +#endif /* Iterate over blocks. */ iter_blocks (idx, nr_threads, filenamev, fd, outputfilev, ofd); -- 1.9.3