| 1 | dnl this file is part of libev, do not make local modifications |
1 | dnl this file is part of libev, do not make local modifications |
| 2 | dnl http://software.schmorp.de/pkg/libev |
2 | dnl http://software.schmorp.de/pkg/libev |
| 3 | |
3 | |
| 4 | dnl libev support |
4 | dnl libev support |
| 5 | AC_CHECK_HEADERS(sys/epoll.h sys/event.h sys/queue.h) |
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 | |
6 | |
| 7 | AC_CHECK_FUNCS(epoll_ctl kqueue) |
7 | AC_CHECK_FUNCS(inotify_init epoll_ctl kqueue port_create poll select eventfd signalfd) |
| 8 | |
8 | |
| 9 | AC_CHECK_FUNC(clock_gettime, [], [ |
9 | AC_CHECK_FUNC(clock_gettime, [], [ |
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10 | dnl on linux, try syscall wrapper first |
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11 | if test $(uname) = Linux; then |
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12 | AC_MSG_CHECKING(for clock_gettime syscall) |
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13 | AC_LINK_IFELSE([AC_LANG_PROGRAM( |
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14 | [#include <unistd.h> |
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15 | #include <sys/syscall.h> |
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16 | #include <time.h>], |
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17 | [struct timespec ts; int status = syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts)])], |
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18 | [ac_have_clock_syscall=1 |
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19 | AC_DEFINE(HAVE_CLOCK_SYSCALL, 1, "use syscall interface for clock_gettime") |
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20 | AC_MSG_RESULT(yes)], |
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21 | [AC_MSG_RESULT(no)]) |
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22 | fi |
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23 | if test -z "$LIBEV_M4_AVOID_LIBRT" && test -z "$ac_have_clock_syscall"; then |
| 10 | AC_CHECK_LIB(rt, clock_gettime) |
24 | AC_CHECK_LIB(rt, clock_gettime) |
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25 | unset ac_cv_func_clock_gettime |
| 11 | AC_CHECK_FUNCS(clock_gettime) |
26 | AC_CHECK_FUNCS(clock_gettime) |
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27 | fi |
| 12 | ]) |
28 | ]) |
| 13 | |
29 | |
| 14 | AC_CHECK_LIB(m,ceil) |
30 | AC_CHECK_FUNC(nanosleep, [], [ |
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31 | if test -z "$LIBEV_M4_AVOID_LIBRT"; then |
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32 | AC_CHECK_LIB(rt, nanosleep) |
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33 | unset ac_cv_func_nanosleep |
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34 | AC_CHECK_FUNCS(nanosleep) |
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35 | fi |
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36 | ]) |
| 15 | |
37 | |
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38 | AC_CHECK_LIB(m, ceil) |
| 16 | |
39 | |
| 17 | |
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