AC_CACHE_CHECK([for /proc/uptime], jm_cv_have_proc_uptime,
[jm_cv_have_proc_uptime=no
test -f /proc/uptime \
AC_CACHE_CHECK([for /proc/uptime], jm_cv_have_proc_uptime,
[jm_cv_have_proc_uptime=no
test -f /proc/uptime \
&& cat < /proc/uptime >/dev/null 2>/dev/null \
&& jm_cv_have_proc_uptime=yes])
if test $jm_cv_have_proc_uptime = yes; then
&& cat < /proc/uptime >/dev/null 2>/dev/null \
&& jm_cv_have_proc_uptime=yes])
if test $jm_cv_have_proc_uptime = yes; then