| 1 |
dnl this file is part of libev, do not make local modifications |
| 2 |
dnl http://software.schmorp.de/pkg/libev |
| 3 |
|
| 4 |
dnl libev support |
| 5 |
AC_CHECK_HEADERS(sys/inotify.h sys/epoll.h sys/event.h port.h poll.h sys/select.h sys/eventfd.h sys/signalfd.h) |
| 6 |
|
| 7 |
AC_CHECK_FUNCS(inotify_init epoll_ctl kqueue port_create poll select eventfd signalfd) |
| 8 |
|
| 9 |
AC_CHECK_FUNC(clock_gettime, [], [ |
| 10 |
dnl on linux, try syscall wrapper first |
| 11 |
if test $(uname) = Linux; then |
| 12 |
AC_MSG_CHECKING(for clock_gettime syscall) |
| 13 |
AC_LINK_IFELSE([AC_LANG_PROGRAM( |
| 14 |
[#include <syscall.h> |
| 15 |
#include <time.h>], |
| 16 |
[struct timespec ts; int status = syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts)])], |
| 17 |
[ac_have_clock_syscall=1 |
| 18 |
AC_DEFINE(HAVE_CLOCK_SYSCALL, 1, "use syscall interface for clock_gettime") |
| 19 |
AC_MSG_RESULT(yes)], |
| 20 |
[AC_MSG_RESULT(no)]) |
| 21 |
fi |
| 22 |
if test -z "$LIBEV_M4_AVOID_LIBRT" && test -z "$ac_have_clock_syscall"; then |
| 23 |
AC_CHECK_LIB(rt, clock_gettime) |
| 24 |
unset ac_cv_func_clock_gettime |
| 25 |
AC_CHECK_FUNCS(clock_gettime) |
| 26 |
fi |
| 27 |
]) |
| 28 |
|
| 29 |
AC_CHECK_FUNC(nanosleep, [], [ |
| 30 |
if test -z "$LIBEV_M4_AVOID_LIBRT"; then |
| 31 |
AC_CHECK_LIB(rt, nanosleep) |
| 32 |
unset ac_cv_func_nanosleep |
| 33 |
AC_CHECK_FUNCS(nanosleep) |
| 34 |
fi |
| 35 |
]) |
| 36 |
|
| 37 |
AC_CHECK_LIB(m, ceil) |
| 38 |
|
