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/cvs/libev/libev.m4
Revision: 1.16
Committed: Mon Oct 28 12:36:44 2013 UTC (10 years, 8 months ago) by root
Branch: MAIN
CVS Tags: EV-rel-4_22, rel-4_23, rel-4_22, rel-4_20, rel-4_25, rel-4_24, rel-4_18, rel-4_19
Changes since 1.15: +6 -6 lines
Log Message:
ws

File Contents

# Content
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