Re: [libvirt] [PATCH option 1] Use fallocate directly if possible

> +AC_CHECK_FUNCS([cfmakeraw regexec uname sched_getaffinity getuid getgid posix_fallocate mmap fallocate]) This is already a long line, and you made it longer. Autoconf will let you line-wrap the list to AC_CHECK_FUNCS; it splits on whitespace, including newlines. And maybe it makes more sense to use AC_CHECK_FUNCS_ONCE instead of AC_CHECK_FUNCS (oh right, 2.59 didn't have the former).