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_FUNCS(clock_gettime, [], [ |
10 |
dnl on linux, try syscall wrapper first |
11 |
if test $(uname) = Linux; then |
12 |
AC_MSG_CHECKING(for clock_gettime syscall) |
13 |
AC_LINK_IFELSE([AC_LANG_PROGRAM( |
14 |
[#include <unistd.h> |
15 |
#include <sys/syscall.h> |
16 |
#include <time.h>], |
17 |
[struct timespec ts; int status = syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts)])], |
18 |
[ac_have_clock_syscall=1 |
19 |
AC_DEFINE(HAVE_CLOCK_SYSCALL, 1, Define to 1 to use the syscall interface for clock_gettime) |
20 |
AC_MSG_RESULT(yes)], |
21 |
[AC_MSG_RESULT(no)]) |
22 |
fi |
23 |
if test -z "$LIBEV_M4_AVOID_LIBRT" && test -z "$ac_have_clock_syscall"; then |
24 |
AC_CHECK_LIB(rt, clock_gettime) |
25 |
unset ac_cv_func_clock_gettime |
26 |
AC_CHECK_FUNCS(clock_gettime) |
27 |
fi |
28 |
]) |
29 |
|
30 |
AC_CHECK_FUNCS(nanosleep, [], [ |
31 |
if test -z "$LIBEV_M4_AVOID_LIBRT"; then |
32 |
AC_CHECK_LIB(rt, nanosleep) |
33 |
unset ac_cv_func_nanosleep |
34 |
AC_CHECK_FUNCS(nanosleep) |
35 |
fi |
36 |
]) |
37 |
|
38 |
if test -z "$LIBEV_M4_AVOID_LIBM"; then |
39 |
LIBM=m |
40 |
fi |
41 |
AC_SEARCH_LIBS(floor, $LIBM, [AC_DEFINE(HAVE_FLOOR, 1, Define to 1 if the floor function is available)]) |
42 |
|