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Comparing libev/libev.m4 (file contents):
Revision 1.10 by root, Sun Apr 6 09:53:19 2008 UTC vs.
Revision 1.16 by root, Mon Oct 28 12:36:44 2013 UTC

1dnl this file is part of libev, do not make local modifications 1dnl this file is part of libev, do not make local modifications
2dnl http://software.schmorp.de/pkg/libev 2dnl http://software.schmorp.de/pkg/libev
3 3
4dnl libev support 4dnl libev support
5AC_CHECK_HEADERS(sys/inotify.h sys/epoll.h sys/event.h sys/queue.h port.h poll.h sys/select.h sys/eventfd.h) 5AC_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 6
7AC_CHECK_FUNCS(inotify_init epoll_ctl kqueue port_create poll select eventfd) 7AC_CHECK_FUNCS(inotify_init epoll_ctl kqueue port_create poll select eventfd signalfd)
8 8
9AC_CHECK_FUNC(clock_gettime, [], [ 9AC_CHECK_FUNCS(clock_gettime, [], [
10 if test -z "$LIBEV_M4_AVOID_LIBRT"; then 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 "$ac_have_clock_syscall"; then
11 AC_CHECK_LIB(rt, clock_gettime) 24 AC_CHECK_LIB(rt, clock_gettime)
12 unset ac_cv_func_clock_gettime 25 unset ac_cv_func_clock_gettime
13 AC_CHECK_FUNCS(clock_gettime) 26 AC_CHECK_FUNCS(clock_gettime)
14 fi 27 fi
15]) 28])
16 29
17AC_CHECK_FUNC(nanosleep, [], [ 30AC_CHECK_FUNCS(nanosleep, [], [
18 if test -z "$LIBEV_M4_AVOID_LIBRT"; then 31 if test -z "$LIBEV_M4_AVOID_LIBRT"; then
19 AC_CHECK_LIB(rt, nanosleep) 32 AC_CHECK_LIB(rt, nanosleep)
20 unset ac_cv_func_nanosleep 33 unset ac_cv_func_nanosleep
21 AC_CHECK_FUNCS(nanosleep) 34 AC_CHECK_FUNCS(nanosleep)
22 fi 35 fi
23]) 36])
24 37
25AC_CHECK_LIB(m, ceil) 38if test -z "$LIBEV_M4_AVOID_LIBM"; then
39 LIBM=m
40fi
41AC_SEARCH_LIBS(floor, $LIBM, [AC_DEFINE(HAVE_FLOOR, 1, Define to 1 if the floor function is available)])
26 42
27
28

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