dnl Chroot support.
AC_CHECK_FUNCS([chroot unshare])
- AC_CHECK_HEADERS([sched.h sys/param.h sys/mount.h])
+ AC_CHECK_HEADERS([sched.h sys/param.h sys/mount.h tr1/unordered_set])
dnl lutimes and lchown: used when canonicalizing store items.
dnl posix_fallocate: used when extracting archives.
dnl vfork: to speed up spawning of helper programs.
+ dnl `--> now disabled because of unpredictable behavior:
+ dnl see <http://lists.gnu.org/archive/html/guix-devel/2014-05/msg00036.html>
+ dnl and Nix commit f794465c (Nov. 2012).
dnl sched_setaffinity: to improve RPC locality.
dnl statvfs: to detect disk-full conditions.
dnl strsignal: for error reporting.
- AC_CHECK_FUNCS([lutimes lchown posix_fallocate vfork sched_setaffinity \
+ AC_CHECK_FUNCS([lutimes lchown posix_fallocate sched_setaffinity \
statvfs nanosleep strsignal])
dnl Check whether the store optimiser can optimise symlinks.